Normalize comma-escaping of src-blocks and example-blocks

* lisp/org-src.el (org-escape-code-in-string,
  org-unescape-code-in-string, org-escape-code-in-region,
  org-unescape-code-in-region): New functions.
(org-edit-src-code, org-edit-src-exit): Use new functions.
* lisp/org.el (org-strip-protective-commas): Removed function.
* lisp/org-exp.el (org-export-select-backend-specific-text): Use new
  function.
* lisp/ob.el (org-babel-parse-src-block-match,
  org-babel-parse-inline-src-block-match, org-babel-insert-result):
  Always escape produced blocks, independently on the language of the
  block, if any.  Use new functions.
* doc/org.texi: Update documentation.
* testing/lisp/test-ob.el: Update test.
org-element: Store value of example-blocks and src-blocks unescaped

* lisp/org-element.el (org-element-example-block-parser,
  org-element-src-block-parser): Store value of example-blocks and
  src-blocks unescaped.
(org-element-example-block-interpreter,
org-element-src-block-interpreter): Escape value again when storing
it.
* contrib/lisp/org-export.el (org-export-unravel-code): Don't clean
  commas from code since org-element already took care of it.
* testing/lisp/test-org-export.el: Update test.
* testing/lisp/test-org-element.el: Add tests.
Merge branch 'maint'
Use generated-autoload-file: "org-loaddefs.el" as a local variable.
ob.el: Minor code clean up.
org-bbdb.el: Minor code clean up.
org-publish.el: Minor code clean up.
Remove some autoloads and clean up code.

* org.el (turn-on-orgtbl): Moved here from org-table.el.
(org-clock-persistence-insinuate): Moved here from org-clock.el.
(org-update-all-dblocks, org-map-entries)
(org-require-autoloaded-modules, org-forward-element)
(org-backward-element, org-up-element)
(org-element-greater-elements, org-drag-element-backward)
(org-drag-element-forward, org-mark-element)
(org-narrow-to-element, org-transpose-element)
(org-unindent-buffer): Don't autoload.

* org-clock.el (org-clock-get-clocktable): Rename from
`org-get-clocktable'.
(org-clock-persistence-insinuate): Move to org.el.

* org-capture.el: Do no set `generated-autoload-file' locally.
Minor code clean up.

* org-agenda.el (org-agenda-list): Use
`org-clock-get-clocktable'.  Do no set
`generated-autoload-file' locally.

* org-table.el (org-table-iterate-buffer-tables): Minor
reformatting.
(turn-on-orgtbl): Move to org.el.

* org-html.el (org-export-htmlize-generate-css): Don't autoload.

* org-timer.el (org-timer-pause-or-continue, org-timer-stop):
Ditto.

* ob-tangle.el (org-babel-tangle-lang-exts): Ditto.

* ob-lob.el (org-babel-lob-ingest): Ditto.

* org-id.el (org-id-copy)
(org-id-get-with-outline-path-completion)
(org-id-get-with-outline-drilling): Ditto.

* org-lparse.el (org-lparse-and-open, org-lparse-batch)
(org-lparse-to-buffer, org-replace-region-by)
(org-lparse-region): Ditto.

* org-mobile.el (org-mobile-create-sumo-agenda): Ditto.
Update autoloads.

* org.el: Don't dynamically autoload already autoloaded
functions.
(org-clock-update-time-maybe): Move to org-clock.el.

* org-exp.el (org-insert-export-options-template): Remove
autoload cookie.

* org-clock.el (org-resolve-clocks, org-clock-in)
(org-clock-out, org-clock-cancel, org-clock-goto)
(org-clock-sum, org-clock-display, org-clock-report)
(org-dblock-write:clocktable): Add autoload cookie.
(org-clock-update-time-maybe): Moved from org.el.

* org-beamer.el (org-beamer-sectioning, org-beamer-mode): Ditto.

* org-ascii.el (org-export-ascii-preprocess): Ditto.

* org-archive.el (org-archive-subtree)
(org-archive-to-archive-sibling, org-toggle-archive-tag): Add
autoload cookie.

* org-colview.el (org-columns, org-dblock-write:columnview)
(org-insert-columns-dblock, org-agenda-columns): Ditto.

* org-table.el (org-table-create-with-table.el)
(org-table-create-or-convert-from-region, org-table-create)
(org-table-convert-region, org-table-import)
(org-table-export, org-table-align)
(org-table-justify-field-maybe, org-table-next-field)
(org-table-previous-field, org-table-next-row)
(org-table-copy-down, org-table-field-info)
(org-table-current-dline, org-table-goto-column)
(org-table-insert-column, org-table-delete-column)
(org-table-move-column-right, org-table-move-column-left)
(org-table-move-column, org-table-move-row-down)
(org-table-move-row-up, org-table-move-row)
(org-table-insert-row, org-table-insert-hline)
(org-table-hline-and-move, org-table-kill-row)
(org-table-sort-lines, org-table-cut-region)
(org-table-copy-region, org-table-paste-rectangle)
(org-table-convert, org-table-wrap-region)
(org-table-edit-field, org-table-sum)
(org-table-get-stored-formulas)
(org-table-maybe-eval-formula)
(org-table-rotate-recalc-marks)
(org-table-maybe-recalculate-line, org-table-eval-formula)
(org-table-recalculate, org-table-iterate)
(org-table-edit-formulas)
(org-table-toggle-coordinate-overlays)
(org-table-toggle-formula-debugger, orgtbl-to-generic)
(orgtbl-to-tsv, orgtbl-to-csv, orgtbl-to-latex)
(orgtbl-to-html, orgtbl-to-texinfo, orgtbl-to-orgtbl): Ditto.
Declare functions and variables.
Use org-loaddefs.el instead of org-install.el.
Fix manuals: don't mention (require 'org-install) anymore.

* org.texi (Installation): Don't mention org-install.el
anymore as the replacement file org-loaddefs.el is now loaded
by org.el.

* orgguide.texi (Installation): Ditto.
org.el: Fix references to org-install.el.

* org.el ("org-loaddefs.el"): Don't throw an error if the file
cannot be fund.
(org-version): Use org-loaddefs.el instead of org-install.el.
Fix references to org-install.el.

Use org-loaddefs.el when needed.
Update README_maintainer wrt this.
Merge branch 'maint'
org-odt.el (and org-e-odt.el): Simplify the way style/schema files are found

* org-odt.el (org-odt-lib-dir, org-odt-data-dir)
(org-odt-schema-dir-list, org-odt-styles-dir-list): Delete.
(org-export-odt-schema-dir, org-odt-styles-dir): Infer the
correct directories without requiring other variables.

* org-fixup.el (org-make-org-version, org-make-autoloads):
Don't define `org-odt-data-dir' in org-version.el.

* contrib/lisp/org-e-odt.el (org-e-odt-lib-dir, org-e-odt-data-dir)
(org-e-odt-schema-dir-list, org-e-odt-styles-dir-list): Delete.
(org-e-odt-schema-dir, org-e-odt-styles-dir): Infer the
correct directories without requiring other variables.
Merge branch 'maint'
org.el: Use `org-float-time' instead f the obsolete `time-to-seconds' function

* org.el (org-time-stamp-to-now): Use `org-float-time' instead
of the obsolete `time-to-seconds' function.
org.el (org-deadline-close): Use `org-time-stamp-to-now'

* org.el (org-deadline-close): Use `org-time-stamp-to-now'.
Fix previous commit.