Merge from emacs-24 branch; up to r108077
Make bug-reference-bug-regexp customizable

Ref: http://lists.gnu.org/archive/html/emacs-devel/2012-07/msg00427.html

* lisp/progmodes/bug-reference.el (bug-reference): New custom group.
(bug-reference-bug-regexp): Make it a defcustom.
Add missing :version tags

* profiler.el (profiler): Add missing group :version tag.
* avoid.el (mouse-avoidance-banish-position):
* proced.el (proced-renice-command):
* calc/calc.el (calc-ensure-consistent-units):
* calendar/icalendar.el (icalendar-import-format-uid):
* net/tramp.el (tramp-save-ad-hoc-proxies):
* progmodes/bug-reference.el (bug-reference-bug-regexp):
* progmodes/flymake.el (flymake-error-bitmap)
(flymake-warning-bitmap, flymake-fringe-indicator-position):
* progmodes/sh-script.el (sh-indent-after-continuation):
* progmodes/verilog-mode.el (verilog-auto-template-warn-unused)
(verilog-before-save-font-hook, verilog-after-save-font-hook):
* progmodes/vhdl-mode.el (vhdl-makefile-default-targets)
(vhdl-array-index-record-field-in-sensitivity-list)
(vhdl-indent-comment-like-next-code-line):
* textmodes/reftex-vars.el (reftex-ref-style-alist)
(reftex-ref-macro-prompt, reftex-ref-style-default-list)
(reftex-cite-key-separator, reftex-create-bibtex-header)
(reftex-create-bibtex-footer):
* textmodes/rst.el (rst-new-adornment-down, rst-indent-field)
(rst-indent-literal-normal, rst-indent-literal-minimized)
(rst-indent-comment): Add missing custom :version tags.

* cedet/semantic/complete.el (semantic-displayor-tooltip-mode)
(semantic-displayor-tooltip-initial-max-tags)
(semantic-displayor-tooltip-max-tags): Add missing custom :version tags.
* cedet/ede/linux.el (project-linux): Add missing group :version tag.

* cedet/semantic/complete.el (semantic-displayor-tooltip-max-tags): Doc fix.

* erc/erc.el (erc-lurker):
* erc/erc-desktop-notifications.el (erc-notifications):
Add missing group :version tags.

* gnus/gnus-notifications.el (gnus-notifications):
Add missing group :version tag.
* gnus/gnus-msg.el (gnus-gcc-pre-body-encode-hook)
(gnus-gcc-post-body-encode-hook):
* gnus/gnus-sync.el (gnus-sync-lesync-name)
(gnus-sync-lesync-install-topics): Add missing custom :version tags.
Update copyright notices for 2013.