org-compat: XEmacs actually needs the argument lists...

org-compat (define-obsolete-variable-alias,
define-obsolete-function-alias): Re-introduce argument lists as
XEmacs' byte-compiler otherwise stops compilation.

This means that no other advices must modify these functions with a
different argument list.
ob-core: allow language specific header arguments in properties

* lisp/ob-core.el (org-babel-insert-header-arg,
  org-babel-parse-src-block-match): Replace `if' with empty else part
  by `when' for readability.  (org-babel-params-from-properties):
  Inquire for language specific and default header properties.
  Language specific header properties take precedence over default
  header properties and old-style header property specifications.

This allows for header arguments to be specified as
properties (including inheritance).

#+PROPERTY: header-args :cache "no"
#+PROPERTY: header-args:R :session "*R-property*"

:PROPERTIES:
:header-args:   :cache "yes"
:header-args:R: :session "*R-drawer*"
:END:
org-compat.el: Fix indentation.
fixed bug in tangle-file

* lisp/ob-tangle.el (org-babel-tangle): Fixed bug in tangle-file.
org-contacts: Provide ordering when using cycle completion

* contrib/lisp/org-contacts.el (org-contacts-metadata-prefix):
Provide same function for cycle ordering as is used for display ordering
in completion metadata.

When using cycle completion style for contacts, by setting
`completion-cycle-threshold' to some value, the ordering was not consistent
with order of email addresses in contact definition, nor the order
which was used for regular display completion. Fix that by also
supplying sort function for cycle completion in metadata.
Bug fixes for ox-koma-letter.el

* ox-koma-letter.el: updated documentation and improved defcustoms.
(org-koma-letter-special-tags-after-letter)
(org-koma-letter-special-tags-after-closing): now symbol.
(org-koma-letter--get-custom): falls back to value
(org-koma-letter--prepare-special-contents-as-macro): let
newlines be handled outside of the function
(org-koma-letter--remove-offending-new-lines): function to add
new lines.
(org-koma-letter-headline): updated to work with symbols and
made more robust.
(org-koma-letter-export-to-latex): reset
=`org-koma-letter-special-contents'= to nil

Signed-off-by: Alan Schmitt <alan.schmitt@polytechnique.org>
Added support for to and from heading.

* ox-koma-letter.el: documentation.
(org-koma-letter-special-tags-in-letter): list of tags that
are typeset as part of the letter.
(org-koma-letter--determine-special-value): determine which
value to use (for to and from currentlly) if more than
candidate is available.  Which value is selected depends on
`org-koma-letter-prefer-special-headings'.
(org-koma-letter-prefer-special-headings): a boolean stating
whether to prefer headings with to/from or the #+X_ADDRESS.

The following letter now exports "as expected".  In particular when
special-headings is t heading values have presedence so the
from address would be ="Rasmus\nEmacs\nOrg-mode"= where the
=\n=s would be escaped.  If specia-headings is nil (default)
the from would be my-adr.  The same is true for TO address.

Here's the contents

* from :from:

   Rasmus
   Emacs
   Org-mode

On a technical note, note that the default value will be used if
neither #+X_ADDRESS or a heading is given.

Signed-off-by: Alan Schmitt <alan.schmitt@polytechnique.org>
Possible to set default class for ox koma letters.

* ox-koma-letter.el (org-koma-letter-default-class): default class for
=ox-koma-letter=. Default is nil.
* ox-koma-letter.el (org-koma-letter-plug-into-ox): add a sparse
letter class to =`org-latex-class'= and set it to default.

By default it will use =`org-latex-default-class'=.

Signed-off-by: Alan Schmitt <alan.schmitt@polytechnique.org>
ox-latex: Allow AUTO argument to org-latex-guess-babel-language

* ox-latex.el (org-latex-guess-babel-language): replace AUTO with
  language if AUTO is the option of the LaTeX package Babel.
(org-latex-classes): updated documentation with respect
to `org-latex-guess-babel-language'.

TINYCHANGE
list term as a gnuplot header argument

* lisp/ob-gnuplot.el (org-babel-header-args:gnuplot): Term is a gnuplot
  header argument.
missing argument to error message

* contrib/lisp/ox-koma-letter.el (org-koma-letter-template): Missing
  argument to error message.
ox-latex: Use "ulem" package for both underline and strike through

* lisp/org.el (org-latex-default-packages-alist): Load "ulem" package
  by default.  Use "[normalem]" option to preserve \emph definition.
* lisp/ox-latex.el (org-latex-text-markup-alist): Use "\uline" and
  "\sout" commands from "ulem" package.
Merge branch 'maint'
ox-latex: Remove -c argument from compilation with texi2dvi

* lisp/ox-latex.el (org-latex-pdf-process): This argument can cause
  problem with links with a relative path, since compilation happens
  in a different directory.
Merge branch 'maint'
org-element: Fix special block parsing

* lisp/org-element.el (org-element-special-block-parser): Fix typo in
  regexp matching block type.  Also quote the type so it can contain
  special characters.
* testing/lisp/test-org-element.el: Add test.
Merge branch 'maint'
ox: Fix fuzzy link resolution before first headline

* lisp/ox.el (org-export-resolve-fuzzy-link): Fix link resolution when
  link lives before the first headline.
* testing/lisp/test-ox.el: Add test.
ox-latex: Allow hyperref and footnotemark in items description tags

* lisp/ox-latex.el (org-latex-item): Allow hyperref and footnotemark
  in items description tags.  Also remove a unnecessary hack allowing
  footnotemark with an optional argument in the tag.

Initial patch from Rick Frankel.
Merge branch 'maint'