[Inkscape-devel] new dependence require unstable glib version

The SVN revsion 17317 introduced dependence to unstable glib release

http://inkscape.svn.sourceforge.net/viewvc/inkscape/inkscape/trunk/src/xml/composite-node-observer.h?r1=11017&r2=17317

The glib/gtestutils.h file is on glib-2.15 dev versions, but not on last 2.14 stables version. Some test could be added in the source to avoid such dependence until glib-2.16 go out.

After discussions on IRC, looks like this is to use the g_assert function.