Split libcg3 further into a private and public part

git-svn-id: svn+ssh://beta.visl.sdu.dk/usr/local/svn/repos/visl/tools/vislcg3/trunk@9922 cb2587b3-b7ff-0310-8c81-a2a651690ada
CMake version, NO_SONAME, visibility

git-svn-id: svn+ssh://beta.visl.sdu.dk/usr/local/svn/repos/visl/tools/vislcg3/trunk@9923 cb2587b3-b7ff-0310-8c81-a2a651690ada
Symbols

git-svn-id: svn+ssh://beta.visl.sdu.dk/usr/local/svn/repos/visl/tools/vislcg3/trunk@9924 cb2587b3-b7ff-0310-8c81-a2a651690ada