[gtkmm] Created tag 2.21.8

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.21.8' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Tue Sep 14 12:24:38 2010 +0200

    2.21.8

Changes since the last tag '2.21.7':

Murray Cumming (13):
      Minor NEWS change.
      Button: Remove the construct-only use-underline property.
      Item: Fix the build now that the functions are deprecated.
      Fix compilation errors when disabling deprecated gdkmm API.
      IconView: Added get/set_item_orientation().
      gdkmm: Avoid most Documentation warnings from gmmproc.
      gtkmm: Avoid most Documentation warnings from gmmproc.
      gtkmm: Fix typos to really avoid documentation warnings.
      MessageDialog: Added get_message_area().
      Regenerated C XML documentation.
      Make sure that deprecated API is inside an ifdef.
      Dealt with some TODOs.
      2.21.8