* Makefile.am: add rsvg.
* Makefile.include: add mono-cairo references.
* configure.in: checks for rsvg.
* sources/sources-2.20.xml: exclude all the private hdrs, cuts
the API down to almost nothing.
* rsvg/*: update to ship rsvg2-sharp.dll and associated config/pc
files. Breaking compat here and parallel installing from where
we were in gnome-sharp. The gnome-sharp API version exposes a ton
of junk that isn't public in the C API.
svn path=/trunk/gnome-desktop-sharp/; revision=91200