only check for glXChooseVisual if we compile with gl support
only check for glXChooseVisual if we compile with gl support

git-svn-id: 0398b83559538705afb96f6498afc8fe25790aba@1073 a8f5125c-1e01-0410-8897-facf34644b8e

freevo/kaa-display,freevo/kaa-display