Update short copyright year to 2012.

Update short copyright year to 2012.

* etc/refcards/calccard.tex, etc/refcards/cs-dired-ref.tex:
* etc/refcards/cs-refcard.tex, etc/refcards/cs-survival.tex:
* etc/refcards/de-refcard.tex, etc/refcards/dired-ref.tex:
* etc/refcards/fr-dired-ref.tex, etc/refcards/fr-refcard.tex:
* etc/refcards/fr-survival.tex, etc/refcards/orgcard.tex:
* etc/refcards/pl-refcard.tex, etc/refcards/pt-br-refcard.tex:
* etc/refcards/refcard.tex, etc/refcards/ru-refcard.tex:
* etc/refcards/sk-dired-ref.tex, etc/refcards/sk-refcard.tex:
* etc/refcards/sk-survival.tex, etc/refcards/survival.tex:
* etc/refcards/vipcard.tex, etc/refcards/viperCard.tex:
* lib-src/ebrowse.c (version) <emacs_copyright>:
* lib-src/etags.c (print_version) <emacs_copyright>:
* lib-src/rcs2log (Copyright): Update short copyright year to 2012.
* nextstep/Cocoa/Emacs.base/Contents/Info.plist:
* nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:
* nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:
* src/emacs.c (emacs_copyright): Update short copyright year to 2012.