[cairo] Can't build cairo via Makefile on win32

[Andrej Mitrovic]

I had to replace:

if BUILD_PRIVATE_GLEW

with:

ifeq ($(BUILD_PRIVATE_GLEW), 1)

in /src/Makefile.sources, line 325. This is *after* applying the patch
file from this post:
http://lists.cairographics.org/archives/cairo/2011-May/021927.html

Now I just need to resolve some png dependencies. :)