org-export: Don't export tables rows containing parameters for formulas

* contrib/lisp/org-export.el (org-export-clean-table): Don't export
  tables rows containing parameters for formulas.
org-element: Introduce a new accessor: `org-element-type'

* EXPERIMENTAL/org-e-ascii.el (org-e-ascii--current-text-width,
  org-e-ascii--build-caption, org-e-ascii--build-title,
  org-e-ascii--describe-links, org-e-ascii-template,
  org-e-ascii-paragraph): Use new accessor
* EXPERIMENTAL/org-e-latex.el (org-e-latex--guess-inputenc): Small
  refactoring.
  (org-e-latex-footnote-reference, org-e-latex-link):  Use new
  accessor.
* contrib/lisp/org-element.el (org-element-type): New function.
  (org-element-map, org-element-parse-elements,
  org-element-interpret-data, org-element-normalize-contents,
  org-element-forward, org-element-unindent-buffer): Use new
  accessor.
* contrib/lisp/org-export.el (org-export-get-inbuffer-options,
  org-export-get-min-level, org-export-data, org-export-skip-p,
  org-export-interpret-p, org-export-expand,
  org-export-expand-include-keyword,
  org-export-prepare-file-contents, org-export-first-sibling-p,
  org-export-resolve-fuzzy-link, org-export-get-ordinal,
  org-export-get-loc, org-export-get-genealogy,
  org-export-get-parent-headline): Use new accessor.
org-element: Rename accessors

* contrib/lisp/org-element.el (org-element-property,
  org-element-contents): New functions, renamed from, respecively
  `org-element-get-property' and `org-element-get-contents'.
(org-element-link-successor): Small refactoring.
(org-element-drawer-interpreter,
  org-element-dynamic-block-interpreter,
  org-element-footnote-definition-interpreter,
  org-element-headline-interpreter,
  org-element-inlinetask-interpreter, org-element-item-interpreter,
  org-element-special-block-interpreter,
  org-element-babel-call-interpreter,
  org-element-comment-interpreter,
  org-element-comment-block-interpreter,
  org-element-example-block-interpreter,
  org-element-export-block-interpreter,
  org-element-fixed-width-interpreter,
  org-element-keyword-interpreter,
  org-element-latex-environment-interpreter,
  org-element-property-drawer-interpreter,
  org-element-quote-section-interpreter,
  org-element-src-block-interpreter, org-element-table-interpreter,
  org-element-verse-block-interpreter,
  org-element-emphasis-interpreter, org-element-entity-interpreter,
  org-element-export-snippet-interpreter,
  org-element-footnote-reference-interpreter,
  org-element-inline-babel-call-interpreter,
  org-element-inline-src-block-interpreter,
  org-element-latex-fragment-interpreter,
  org-element-link-interpreter, org-element-macro-interpreter,
  org-element-statistics-cookie-interpreter,
  org-element-subscript-interpreter,
  org-element-superscript-interpreter,
  org-element-time-stamp-interpreter,
  org-element-verbatim-interpreter, org-element-map,
  org-element-parse-elements, org-element-parse-objects,
  org-element-interpret-data,
  org-element-interpret--affiliated-keywords,
  org-element-normalize-contents, org-element-swap-A-B,
  org-element-backward, org-element-drag-backward,
  org-element-drag-forward, org-element-forward,
  org-element-mark-element, org-narrow-to-element,
  org-transpose-elements, org-element-unindent-buffer,
  org-element-up): Use new names.
* contrib/lisp/org-export.el (org-export-get-inbuffer-options,
  org-export-use-select-tags-p, org-export-get-min-level,
  org-export-data, org-export-skip-p, org-export-interpret-p,
  org-export-collect-footnote-definitions,
  org-export-footnote-first-reference-p,
  org-export-get-footnote-number, org-export-get-relative-level,
  org-export-last-sibling-p, org-export-inline-image-p,
  org-export-resolve-fuzzy-link, org-export-resolve-id-link,
  org-export-resolve-ref-link, org-export-resolve-coderef,
  org-export-expand-macro, org-export-get-loc,
  org-export-handle-code, org-export-collect-elements,
  org-export-get-genealogy, org-export-get-previous-element): Use new names.
* EXPERIMENTAL/org-e-ascii.el (org-e-ascii--current-text-width,
  org-e-ascii--build-title, org-e-ascii--build-caption,
  org-e-ascii--list-listings, org-e-ascii--list-tables,
  org-e-ascii--unique-links, org-e-ascii--describe-links,
  org-e-ascii-template, org-e-ascii-drawer, org-e-ascii-emphasis,
  org-e-ascii-entity, org-e-ascii-export-snippet,
  org-e-ascii-export-block, org-e-ascii-fixed-width,
  org-e-ascii-headline, org-e-ascii-horizontal-rule,
  org-e-ascii-inline-src-block, org-e-ascii-inlinetask,
  org-e-ascii-item, org-e-ascii-keyword,
  org-e-ascii-latex-environment, org-e-ascii-latex-fragment,
  org-e-ascii-link, org-e-ascii-paragraph, org-e-ascii-quote-section,
  org-e-ascii-statistics-cookie, org-e-ascii-subscript,
  org-e-ascii-superscript, org-e-ascii-table, org-e-ascii-verbatim,
  org-e-ascii-verse-block): Use new names
* EXPERIMENTAL/org-e-latex.el (org-e-latex--wrap-label,
  org-e-latex-drawer, org-e-latex-emphasis, org-e-latex-entity,
  org-e-latex-example-block, org-e-latex-export-snippet,
  org-e-latex-export-block, org-e-latex-fixed-width,
  org-e-latex-footnote-reference, org-e-latex-headline,
  org-e-latex-link--inline-image, org-e-latex-latex-fragment,
  org-e-latex-latex-environment, org-e-latex-keyword,
  org-e-latex-item, org-e-latex-inlinetask,
  org-e-latex-inline-src-block, org-e-latex-special-block,
  org-e-latex-radio-target, org-e-latex-quote-section,
  org-e-latex-plain-list, org-e-latex-src-block,
  org-e-latex-statistics-cookie, org-e-latex-table--format-string,
  org-e-latex-target, org-e-latex-time-stamp, org-e-latex-verbatim):
  Use new names
* EXPERIMENTAL/org-e-publish.el (org-e-publish-collect-index,
  org-e-publish-index-generate-theindex): Use new names.
org-e-html: Use new accessors introduced in org-export

Table cells are now transcoded.
org-e-odt: New ODT exporter based on org-export - A rough cut

This is based on org-e-html.  It can create simple documents.  Lots of
cleanups will follow.  With this change, org-e-html and org-e-odt can
develop independently.
org-export: Modify dispatcher to accommodate e-odt backend

* contrib/lisp/org-export.el (org-export-dispatch)
(org-export-dispatch-ui): New entries for ODT backend.
org-export: Remove `:genealogy', introduce `:ignore-list'

* EXPERIMENTAL/org-e-ascii.el (org-e-ascii--current-text-width,
  org-e-ascii-item, org-e-ascii-paragraph): Apply `:genealogy' removal.
* EXPERIMENTAL/org-e-latex.el (org-e-latex-item): Apply `:genealogy'
  removal.
* contrib/lisp/org-element.el (org-element-map): Do not compile
  genealogy.  Also use `:ignore-list' when possible.
* contrib/lisp/org-export.el (org-export-collect-tree-properties):
  Populate `:ignore-list' before starting to transcode each element in
  subtree.
(org-export-get-min-level): Use `:ignore-list'.
(org-export--skip-p): Renamed from `org-export-skip-p'.  This is now
an internal function.
(org-export-data): Use and update `:ignore-list'.  Do not update
genealogy.
(org-export-ignore-element): New function
(org-export-last-sibling-p): Small refactoring.
(org-export-resolve-fuzzy-link): Apply `:genealogy' removal.
(org-export-get-genealogy): Use a more efficient algorithm.

The equivalent of (plist-get info :genealogy) is
now (org-export-get-genealogy blob info), blob being any element or
object.
org-export: New function `org-export-get-parent'

* contrib/lisp/org-export.el (org-export-get-parent): New function.
(org-export-data, org-export-get-previous-element,
org-export-get-next-element): Use new function.
* EXPERIMENTAL/org-e-ascii.el (org-e-ascii-item): Use new function.
  Refactor code.
(org-e-ascii-paragraph): Use new function.
* EXPERIMENTAL/org-e-latex.el (org-e-latex-item): Use new function.
* EXPERIMENTAL/org-e-html.el (org-e-html-item): Use new function.
* EXPERIMENTAL/org-e-odt.el (org-e-odt-item): Use new function.
org-export: Small changes to UI, allow q to quit

* contrib/lisp/org-export.el (org-export-dispatch): Small changes to
  UI, allow q to quit.
org-export: Fix export to subtree

* contrib/lisp/org-export.el (org-export-as): Subtree option was
  ignored.  Also, narrowing to region and to subtree are exclusive.
org-element: New variable defining complete list of objects

* contrib/lisp/org-element.el (org-element-all-objects): New variable.
org-export: Fix some small bugs, include tests

* contrib/lisp/org-export.el (org-export-get-inbuffer-options): Fix
  but with incomplete macros returning an error.  Also with behaviour
  `nil', only insert new value if none was defined before.
(org-export-use-select-tags-p): Fix bug preventing it from properly
detecting select-tags.
(org-export--skip-p): Small refactoring
* testing/contrib/lisp/test-org-export.el: New test file.
org-export: Remove call to a phantom function

* contrib/lisp/org-export.el (org-export-get-min-level): Remove call
  to a phantom function.
org-export: Add a require to e-odt back-end

* contrib/lisp/org-export.el (org-e-odt): Add a require to e-odt
  back-end.
org-element: Move archived tree handling out of org-element-map

* contrib/lisp/org-element.el: Move archived tree handling out of
  org-element-map.
* contrib/lisp/org-export.el (org-export-get-ignore-list): Properly
  ignore archived with `org-export-with-archived-trees' set to
  `headline'.
* testing/contrib/lisp/test-org-export.el (test-org-export/handle-options):
  Add a test for that.
org-export: Fix select-tag handling

* contrib/lisp/org-export.el (org-export-collect-tree-properties):
  Remove `:use-select-tags' property.
(org-export-populate-ignore-list): Renamed from
`org-export-get-ignore-list'.
(org-export--selected-trees): Renamed from
`org-export-use-select-tag-p'.
(org-export--skip-p): Use an additional argument to specify list of
trees containing a select tag.
(org-export-select-tags, org-export-exclude-tags,
org-export-with-priority): Change doc-string.
* testing/contrib/lisp/test-org-export.el: Tests modified
  accordingly.
org-element: COMMENT and QUOTE keywords, ARCHIVE tags are case sensitive

* contrib/lisp/org-element.el (org-element-headline-parser): COMMENT
  and QUOTE keywords, ARCHIVE tags are case sensitive.
* testing/contrib/lisp/test-org-element.el: New file.
org-export: Export snippets are not skipped automatically: back-ends decide

* contrib/lisp/org-export.el (org-export-snippet-backend): New
  function.
(org-export--skip-p): Remove automatic skip of export snippets.
* EXPERIMENTAL/org-e-ascii.el (org-e-ascii-export-snippet): Use new
  function.
* EXPERIMENTAL/org-e-html.el (org-e-html-export-snippet): Use new
  function.
* EXPERIMENTAL/org-e-latex.el (org-e-latex-export-snippet): Use new
  function.
* EXPERIMENTAL/org-e-odt.el (org-e-odt-export-snippet): Use new
  function.
* testing/contrib/lisp/test-org-export.el: Add test.

The idea behind this change is that a given back-end may decide to
keep an export snippet not directly targetted at it (i.e. a beamer
back-end that would want to keep latex snippets).  Hence, filtering
snippets is on back-ends side, and a new function is added to help
them in that task.
org-e-latex: Fix compile bugs

* EXPERIMENTAL/org-e-latex.el (org-e-latex-compile): Fix compile bugs.
org-element: Small refactoring

* contrib/lisp/org-element.el (org-element-parse-elements): Small refactoring.