Simplfiy setting S5 slideshow type to XOXO.

* contrib/lisp/ox-s5.el (org-s5-template): Set org-html-divs based on
  :html-container. If it's "li", use XOXO format ("ol").
(org-s5-divs): Changed to internal variable from option and renamed to
`org--s5--divs' -- Changing the element type or id of the
preamble (header) or postamble (footer) breaks the S5 stylesheets.
org-table: Fix "Invalid use of `\\' in replacement text"

* lisp/org.el (org-delete-char): Fix "Invalid use of `\\' in
  replacement text" when deleting a character in a cell which contains
  "\"
Fix commenting lines beginning with a link

* lisp/org.el (org-comment-or-uncomment-region): Fix commenting lines
  beginning with a link.
ox-latex: Fix error with inline image with no option provided

* lisp/ox-latex.el (org-latex--inline-image): Fix error when no
  default width, height and option are provided and no attribute is
  set for the inline image.
ox-latex: Fix 7b36019069490e30084cd6d9cb72965a956d5564

* lisp/ox-latex.el (org-latex--inline-image): Fix commit
  7b36019069490e30084cd6d9cb72965a956d5564.
allow comments between code blocks and un-named res

* lisp/ob-core.el (org-babel-where-is-src-block-result): Allow comments
  between code blocks and un-named results.
fix test fail introduced by change of default in e8742b78e0

* testing/lisp/test-org-list.el (test-org-list/to-html): Bind
  `org-html-indent´ to nil for testing.
disable VC for batch evaluation

* mk/default.mk: Disable VC during batch evaluation.

This speeds up file handling, especially on Windows where Git can be
very slow.
prevent double quoting for $(datadir)

* mk/default.mk (MAKE_ORG_VERSION): Keep $(datadir) outside quotes,
  should already be shell-quoted.

Reported by Bernd Haug.
ox-rss.el: Fix keys descriptions in `org-export-define-derived-backend'

* ox-rss.el: Fix keys descriptions in
`org-export-define-derived-backend'.