Changes

Adapt change of commit d93c5d23e304ea20e868595748f92a5bef4f5703 to unit test (GLCanvas realization point)

Fix Bug 658 (Mesa 9.0 3.1 Intel compat quirk, 3.1 core only) ; No PROFILE_ALIASING compat -> core ; Fix setGLFunctionAvailability(..) failure path @ profile query

- Add GLRendererQuirks.GLNonCompliant, marking a GL context/profile non compliant.
  Currently: 'Mesa DRI Intel(R) Sandybridge Desktop' && 3.1 compat profile

- Fix Bug 658 (Mesa 9.0 3.1 Intel compat quirk, 3.1 core only)
  Detect case using new GLRendererQuirks.GLNonCompliant in setGLFunctionAvailability() and return 'false'.

- No PROFILE_ALIASING compat -> core
  Use true core GL profiles / context if available to ensure
  proper API behavior across platforms due to different functionality.
  E.g. don't use GL3bc if GL3 is requested.

- Fix setGLFunctionAvailability(..) failure path @ profile query
  Destroy temp context & zero result to cont. iterating through GL versions.
  This missing cleanup lead to returning the faulty GL context handle and it's mapping/usage.