Need to request an ALPHA channel here or it doesn't work with pbuffers.  May need to have a different set for pixel buffers so that it works on some Linux/Mesa PCs.  Checked in the wrong file last time.
Need to request an ALPHA channel here or it doesn't work with
pbuffers.  May need to have a different set for pixel buffers so that
it works on some Linux/Mesa PCs.  Checked in the wrong file last time.


git-svn-id: 4705079bc6b8aadf675e3696f5c015a6aa4916e3@725 3c1deb5b-d424-0410-962d-aba41a686d42

hsorby/zinc,OpenCMISS/zinc,hsorby/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,OpenCMISS/zinc