[gtkmm] Created tag 3.17.70

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '3.17.70' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Thu Aug 20 13:46:30 2015 +0200

    3.17.70

Changes since the last tag '3.17.50':

Daniel Hams (1):
      Add Gtk::GLArea and example to gtkmm-demo.

Kjell Ahlstedt (5):
      Take advantage of gmmproc's latest docs processing
      Gtk::PlacesSidebar: Add set_drop_targets_visible()
      tools/gen_scripts: Don't read private.h files
      Regenerate .defs files without information from private.h
      Remove unnecessary _IGNORE()

Murray Cumming (7):
      Fix the build with -Wshadow compiler warnings.
      Update gdk .defs files.
      Regenerate gtk .defs files.
      Update _docs.xml files.
      Regnerate .defs files.
      Regenerate _docs.xml files.
      3.17.70