contrib/lisp/org-contacts.el: Allow the user to customize interactively the vcard export

* contrib/lisp/org-contacts.el (org-contacts-export-as-vcard): Wrap
  `org-contacts-export-as-vcard-internal' to prompt for the parameters
  when called interactively.
(org-contacts-export-as-vcard-internal): The old function
  `org-contacts-export-as-vcard'.

Thanks to Esben Stien for the suggestion.
org-element: Fix parsing multi-line links

* lisp/org-element.el (org-element-link-parser): Properly handle
  multi-line links according to RFC 3986 when enclosed within square
  brackets.

* testing/lisp/test-org-element.el (test-org-element/link-parser): Add
  test.
Merge branch 'maint'

Conflicts:
	testing/lisp/test-org-element.el
test-org-element: Fix indentation

* testing/lisp/test-org-element.el (test-org-element/link-parser): Fix
  indentation.
Fix ID generation in org-rss-publish-to-rss

* contrib/lisp/ox-rss.el (org-rss-publish-to-rss): Fix a bug that
  causes ID properties to be generated in org buffer emacs is
  currently visiting rather than the file containing the feed.
Merge branch 'master' of orgmode.org:org-mode
testing/README: Changes to "Interactive testing"

* testing/README: Changes in "Interactive testing" instructions.
ox: Implement predicate for export blocks

* lisp/ox.el (org-export-raw-special-block-p): New function.

* testing/lisp/test-ox.el (test-org-export/raw-special-block-p): New
  test.

This patch is a forward-compatibility measure since the function is
mandatory for export back-ends in Org 8.3. It makes it easier for
back-end maintainers to provide a back-end compatible with both Org
8.2 and 8.3.
Merge branch 'maint'
org-element: Add `:raw-value' property to special blocks

* lisp/org-element.el (org-element-special-block-parser): Add
  `:raw-value' property.
Remove `export-block' syntax type

* lisp/org-element.el (org-element-all-elements): Remove
  `export-block' type.
(org-element-block-name-alist): Make it a defconst since it is not
meant to be changed anymore.
(org-element-export-block-parser,
org-element-export-block-interpreter): Remove functions.

* lisp/ox.el (org-export-filters-alist): Remove export block filter.
(org-export-register-backend): Do not alter
`org-export-block-name-alist' anymore.
(org-export-define-backend, org-export-define-derived-backend): Update
docstring.
(org-export-filter-export-block-functions): Remove variable.

* testing/lisp/test-org-element.el (test-org-element/export-block-parser,
  test-org-element/export-block-interpreter): Remove tests.

* testing/lisp/test-ox.el (test-org-export/define-backend): Update test.
Merge export and special blocks within back-ends

* lisp/ox-ascii.el (org-ascii-export-block): Remove function.
(org-ascii-special-block): Handle raw special blocks.

* lisp/ox-beamer.el (org-beamer-export-block): Remove function.

* lisp/ox-html.el (org-html-export-block): Remove function.
(org-html-special-block): Handle raw special blocks.

* lisp/ox-latex.el (org-latex-export-block): Remove function.
(org-latex-special-block): Handle raw special blocks.

* lisp/ox-man.el (org-man-export-block): Remove function.
(org-man-special-block): Handle raw special blocks.

* lisp/ox-md.el (org-md-export-block): Remove function.

* lisp/ox-odt.el (org-odt-export-block): Remove function.
(org-odt-special-block): Handle raw special blocks.

* lisp/ox-texinfo.el (org-texinfo-export-block): Remove function.
(org-texinfo-special-block): Handle raw special blocks.

* contrib/lisp/ox-groff.el (org-groff-export-block): Remove function.
(org-groff-special-block): Handle raw special blocks.

* contrib/lisp/ox-koma-letter.el (org-koma-letter-export-block):
  Remove function.
ORG-NEWS: Document `export-block' type removal
ORG-NEWS: Drop a note about backward-compatibility
org-table.el (org-table-eval-formula): Better error throwing

* org-table.el (org-table-eval-formula): Throw an error when
trying to replace a wrong formula specifier.

Thanks to Alejandro Suarez for reporting this.
contrib/lisp/org-notmuch.el: customisable notmuch open functions

* contrib/lisp/org-notmuch.el: org-notmuch-open-function,
  org-notmuch-open-search-function: New defcustoms, can be used to set
  custom notmuch-open functions.
contrib/lisp/org-notmuch.el: new notmuch open function

* contrib/lisp/org-notmuch.el: org-notmuch-tree-follow-link: New function,
  can be used to follow notmuch or notmuch-search links.
test-org.el: Test info link using Emacs info documentation

* test-org.el (test-org/open-at-point-in-property)
(test-org/open-at-point-in-comment)
(test-org/open-at-point/info): Test info link using Emacs info
documentation.
org.el (org-activate-plain-links): Don't activate :elisp: and :shell: tags

* org.el (org-activate-plain-links): Don't activate :elisp:
and :shell: tags as links.  Enhance the docstring.
(org-activate-angle-links, org-activate-footnote-links)
(org-activate-bracket-links, org-activate-dates)
(org-activate-target-links): Minor docstrings enhancement.

Thanks to Andrea Rossetti for reporting this.
org-git-link.el: Add support for line in org-git-ling

* org-git-link.el (org-git-open): Jump to the line if provided in the link.
(org-git-split-string): Parse a third element of the list and change the error
message accordingly.
(org-git-create-git-link): Accept the third optional line argument.
(org-git-store-link): call `org-git-create-git-link' with the current line
number.