[Opensg-core] Using OpenSG/Support

[Dirk R. <dir...@gm...>]

	Hi Gerrit,

I was trying to set up my Windows box using the CMakeFiles under /Support/, but 
I can't get that to work.

I started with ZLib, but the structure that the Support/zlib/CMakeLsits expects 
is not the one found in the normal download 
(http://prdownloads.sourceforge.net/libpng/zlib-1.2.5.tar.gz?download) (no 
source/ dir).

Is that an artifact of you using the php downloads originally, or is that not 
how this is supposed to be used?

Thanks

	Dirk