ob-ref: Fix "Marker points into wrong buffer" error

* lisp/ob-ref.el (org-babel-ref-parse): If
  `org-babel-current-src-block-location' is a marker, it can be from
  another buffer, use marker-position instead in this case.

Introduced with r114064 on Emacs trunk.  Not sure if this is a bug in
Org or Emacs, but the patch restores the previous behaviour.
Merge branch 'maint'
Improve message when file to include is missing

* org.el (org-file-contents): Improve message when linked file does not exist.
Fix 77458b
Merge branch 'maint'
Revert "Improve message when file to include is missing"

This reverts commit 8ad7b3888fae00ca003f8bac299da6bfbff78005.
Fix e52599

Thanks to Matt Lundin for reporting this.
Merge branch 'maint'
ox-latex: Fix :options discrepancy between blocks and lists

* lisp/ox-latex.el (org-latex-plain-list): Do not automatically
  enclose value for :options attribute within square brackets.
  Instead, append them verbatim next to the block name, as special
  blocks do.
* doc/org.texi (@LaTeX{} specific attributes): Update manual.
Merge branch 'maint'
Graphic: Catch errors and return error message

* lisp/ob-R.el (org-babel-expand-body:R): Added the opening of the
  tryCatch() wrapper

* lisp/ob-R.el (org-babel-R-construct-graphics-device-call): Added
  closing of the wrapper containing the error function.

Added tryCatch() wrapper around the execution of the source block so
that if an error occurs
- the R graphic device is closed even when an error occurs
- a graph containing the error message is created
- the error message is printed in the R session in the form
    ERROR : the error message

TINYCHANGE
org-element: Remove quote sections

* lisp/org-element.el (org-element-quote-section-parser,
  org-element-quote-section-interpreter): Remove functions.
  (org-element--current-element, org-element--parse-elements): Do not
  handle quote sections at all.
* testing/lisp/test-org-element.el (test-org-element/quote-section-parser):
  Remove test.
ox: Remove quote sections

* lisp/ox.el (org-export-filter-quote-section-functions): Remove
  variable.
Export back-ends: Remove quote section translators

* lisp/ox-ascii.el (org-ascii--current-text-width): Remove
  `quote-section' reference.
  (org-ascii-quote-section): Remove function.
* lisp/ox-html.el (org-html-quote-section): Remove function.
* lisp/ox-man.el (org-man-quote-section): Remove function.
* lisp/ox-md.el (org-md-quote-section): Remove function.
* lisp/ox-odt.el (org-odt-quote-section): Remove function.
* lisp/ox-org.el (org-org-quote-section): Remove function.
* lisp/ox-texinfo.el (org-texinfo-quote-section): Remove function.
ox-groff: Remove quote section translator

* contrib/lisp/ox-groff.el (org-groff-quote-section): Remove function.
ORG-NEWS: Notify "QUOTE" keywords deprecation
Merge branch 'maint'
org.texi (Literal examples): Fix typo

* org.texi (Literal examples): Fix typo.
Merge branch 'maint'
Remove left over references to QUOTE blocks

* lisp/org.el (org-quote-string): Remove variable.
(org-enable-fixed-width-editor, org-context): Update docstring.
(org-toggle-fixed-width-section): Remove function and binding.
(org-set-font-lock-defaults): Remove reference to `org-quote-string'.

* lisp/org-element.el (org-element-headline-parser,
  org-element-headline-interpreter): Remove references to
  `org-quote-string'.

* testing/lisp/test-org-element.el (test-org-element/headline-quote-keyword):
  Remove test.
(test-org-element/headline-interpreter): Remove a test.