Increment version to 2.17.9.2 and update news

	* configure.ac (AC_INIT): Bump version number to 2.17.9.2.
	* NEWS: Write news entry for gtkmm 2.17.9.2.

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

	Remove documentation location override

	* docs/Makefile.am (htmlrefpub): Remove variable override as
	the documentation is now hosted on library.gnome.org.  D'oh.

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