[easytag] (13 commits) Non-fast-forward update to branch wip/easytag-next

[David King <davidk src gnome org>]

The branch 'wip/easytag-next' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 http://live.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  8adcb6c... Use stock GTK+ icons in a few more places
  0f3be84... Use icons from the icon naming specification
  f5b14b9... Fix missing prototype warnings
  c4603cf... Use gboolean for returning TRUE and FALSE
  00db216... Remove some unused variables
  c2145b4... Fix an uninitialised variable warning
  698f047... Use g_file_new_tmp() for creating temporary file
  a3c178c... Add static to many declarations
  532fd3f... Use g_return_if_fail() and g_return_val_if_fail()

Commits added to the branch:

  2bc0a75... Updated Spanish translation (*)
  ae6d217... Added Serbian translation (*)
  c853330... Updated Polish translation (*)
  9670828... Use stock GTK+ icons in a few more places
  1e2928b... Use icons from the icon naming specification
  e573a15... Fix missing prototype warnings
  f3d52f5... Use gboolean for returning TRUE and FALSE
  d731ad8... Remove some unused variables
  f98200a... Fix an uninitialised variable warning
  d269b5b... Use g_file_new_tmp() for creating temporary file
  151146f... Add static to many declarations
  5a08f3e... Use g_return_if_fail() and g_return_val_if_fail()
  2fb39b3... Avoid use of AC_CYGWIN and AC_MINGW32

(*) This commit already existed in another branch; no separate mail sent