fixed OSG_INCLUDES path to point to osg install dir
FIX: Windows build
NOTE: On windows, we explicitly list all the required bullet and osg libraries,
since using the library finding modules does not work correctly in debug builds.
the reason is that even for debug builds, release versions of bullet and osg are
expected to be found in the installation dirs, making it impossible to generate
a debug build without building a release version first (which is annoying)
Merge branch 'master' of https://github.com/omega-hub/omegaOsg