[gtksourceview] (22 commits) Non-fast-forward update to branch wip/search

[Sébastien Wilmet <swilmet src gnome org>]

The branch 'wip/search' 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:

  1a0d896... Doc: add a warning about unescape/escape utils functions

Commits added to the branch:

  bf9bde4... Define ENABLE_NLS if NLS is enabled in configure (*)
  176d70f... Updated Lithuanian translation (*)
  5555e6c... completion: use new GtkTreeColumn for placeholder text and  (*)
  e4484e4... Completion: better document the proposal text alignment (*)
  f4ee474... Updated Traditional Chinese translation(Hong Kong and Taiwa (*)
  da6c9d7... completioncontainer: calculate maximum size based on window (*)
  4eace1c... Updated Irish translation (*)
  0a6ece1... API break: add a GError parameter to replace() and replace_ (*)
  72d4850... API break: remove the SearchContext:regex-state property (*)
  e7bde74... test-widget: remove basic search and replace feature (*)
  fa7e21e... test-widget: remove TEST_XML_MEM (*)
  8fd0db6... test-widget: clean gtk_source_buffer_load_file() (*)
  37a2320... test-widget: improve code for opening a file (*)
  81283e1... test-widget: continue the clean-up (*)
  d4f9f21... Deprecate the GtkSourceMarkAttributes:stock-id property (*)
  0df22c6... Release 3.9.91 (*)
  1a374af... Post-release version bump (*)
  14ef8db... GutterRendererMarks: chain to parent change_view() (*)
  ccb3a93... GutterRendererLines: recalculate size on view style updated (*)
  8de6358... Updated French translation (*)
  7730714... lang-tutorial: some fixes (*)
  a5b1a14... Improve doc of escape/unescape utils functions

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