Only build Quicktime on 32 bit Windows

Helps address issue 1180
Fix up a few glowies.
Revert occlusion changes to try and pinpoint flicker issue.
Merge branch 'master' of git://github.com/Shyotl/SingularityViewer
Merge branch 'master' of git://github.com/Lirusaito/SingularityViewer