Increment version to 2.17.9.3 and update news

	* configure.ac (AC_INIT): Bump version number to 2.17.9.3.
	* NEWS: Write news entry for gtkmm 2.17.9.3.

2009-08-28  Daniel Elstner  <danielk@openismus.com>

	Fix documentation location in pkg-config files

	* {atk,gdk,gtk}/{atk,gdk,gtk}mm{,-uninstalled}.pc.in (htmlrefpub):
	Point to library.gnome.org.

2009-08-28  Daniel Elstner  <danielk@openismus.com>