ati projected tetra bugs

Clean up "invalid operation" OpenGL error reported
on AMD Radeon dashboards. Removed extra framebuffer
and renderbuffers allocation and leak. Match internal
multisampling paramters to the default FBO. For FBO
blit they must match. Added IsSupported methods to
test for extension/driver support. Disabled the class
for non Apple AMD Radeon devices because the ctests
take > 30min and do not produce correct result. It
looks to me like AMD drivers have a texturing related
bug. Clean up a couple deviations from VTK coding
standard.

Change-Id: Ie1cbfab46a117c16c2731a29dd2f3829daeffaa8
Merge topic 'amd-projected-tetra' into master

60fbcda9 ati projected tetra bugs