Removed checks for antique Borland versions

VTK already assumes elsewhere that __BORLANDC__ >= 0x0560, so
remove remaining checks.

Change-Id: I3425d6a3aa07bd9b52dee5918f2d2010dd5ee0a7
fix_GPU_resource_handling

Change-Id: I4fdb88c0700e5ca73fd6eba087a230c3cbacdba8
mpi4py: use old code with Python 2.6 as well

Seems to have issues on OS X despite it working with 2.7 and the symbol
being in both.

Change-Id: If0d8e8f98491e6b024c9794b260a8545b8a8d554
clean up some shader code and classes

Change-Id: I01d589927552bfa534d806ea0d1f003357899a35
Merge topic 'shader_precision' into master

7e75575c clean up some shader code and classes
Merge topic 'borland-cleanup' into master

116f93f8 Removed checks for antique Borland versions
Merge topic 'piston-bugfix' into master

313b647f fix_GPU_resource_handling
Update to modern CMake style

Change-Id: I6c64edc053d65fecb7db2d6a39a38c40e7fdf9ef
Allow location of OSMesa install to be specified

Allow the location of an OSMesa install to be specified and
search there first for includes and library. The location
can be specified by setting OSMESA_ROOT.

Change-Id: I0afe52b9f81a70a990d36d6895a3ce50720706a9
Merge topic 'find-mesa-improvements' into master

deae524a Allow location of OSMesa install to be specified
fa04ced9 Update to modern CMake style
Merge topic 'mpi4py-osx' into master

0fe880d6 mpi4py: use old code with Python 2.6 as well