* international/mule-cmds.el (locale-language-names): Map locale
  language name `ca' to language environment `Catalan'.

* language/european.el: Add definition of language environment for
  the Catalan language.

* leim/quail/latin-pre.el: Add quail rule to the `catalan-prefix'
  input method to support input of middle dot characters through
  composition (bug#18279).

ef33bc7 Spelling and grammar fixes
9c3dbab Fix copyright years by hand
0e96320 Update copyright year to 2016

* lisp/language/hebrew.el (hebrew-shape-gstring): If the font backend
supports rendering of combining characters, call
font-shape-gstring.

* src/font.c (Ffont_get): Handle `combining-capability' property.
(syms_of_font): New symbol ":combining-capability'.

* src/font.h (struct font_driver): New member combining_capability.

* src/ftfont.c: Include "category.h".
(ftfont_driver): Initialize combining_capability to
ftfont_combining_capability.
(ftfont_shape_by_flt): If OTF is null, try to find a suitable
FLT in advance.
(ftfont_combining_capability): New function.

Run admin/update-copyright.

* lisp/language/misc-lang.el (composition-function-table): Fix
entries for Arabic and Syriac.

This patch should not change behavior.  It typically omits backslashes
where they are redundant (e.g., in the string literal "^\$").
In a few places, insert backslashes where they make regular
expressions clearer: e.g., replace "^\*" (equivalent to "^*") with
"^\\*", which has the same effect as a regular expression.
Also, use ‘\ %’ instead of ‘\%’ when avoiding confusion with SCCS IDs,
and similarly use ‘\ $’ instead of ‘\$’ when avoiding confusion with
RCS IDs, as that makes it clearer that the backslash is intended.

Most of these fixes involve escaping grave accents that are
actually intended to be grave accents, not left quotes.
(Bug#20385)

This is as per "Tips for Documentation Strings" in the elisp manual.
For consistency, do the same in diagnostics and comments.