ENH: Faster low-level implementation for TransformPoints.

The vtkTransform's TransformPoints() method iterated through the
points using GetPoint() and InsertNextPoint(), both of which require
virtual method calls to vtkPoints' internal vtkDataArray. This patch
eliminates all per-point virtual method calls by typcasting to float
or double before looping through the points.

Change-Id: Ieabef02cddb6a3290a31315c8d5baf268dacc079
stacktrace on SEGV etc in vtk cxx tests

For cxx test builds containing debug info generated by a
supported compiler on systems that support POSIX signals
catch some common signals (SEGV,TERM,FPE etc) and print
a stacktrace.

Change-Id: I041432992215c9a8586f0f558ad467b721066402
stacktrace on SEGV etc in vtk python tests

For python tests in builds containing debug info generated
by a supported compiler on systems that support POSIX signals
catch some common signals (SEGV,TERM,FPE etc) and print
a stacktrace.

Change-Id: I8762c043f28196000852574af1a5bc226f0e02c8
Merge topic 'stacktrace-for-vtktesting' into master

c0ae834c stacktrace on SEGV etc in vtk python tests
de509c2b stacktrace on SEGV etc in vtk cxx tests
Merge remote-tracking branch 'pvvtk/pv-master' into HEAD

* pvvtk/pv-master:

Change-Id: I365cac709f4d76e10fee21fe1ec44e84976c5c9f
Merge topic 'transform-points-efficiency' into master

3c1ef1a4 ENH: Faster low-level implementation for TransformPoints.
fix a memory leak

@thanks Mathieu Westphal for the report and patch

Change-Id: Ibd210e5456955d10f21443e853c299f07731b7c9
- FreeBSD, just like OSX, uses stat instead of stat64

Change-Id: Ief1911b72184635ea73581de1e5a66cf7d54b4c3
- Space missing between argv[0] and first argument

Change-Id: I9d35e485f7e37f0c780f15c6ed0ca635819dab49
Add support for PNG compression in vtkPNGWriter

Change-Id: Ibae911d174ac101f22487459e30d8254a073a0b2
Merge topic 'ParticleReader-usage-typo' into master

47ff2812 - Space missing between argv[0] and first argument
Merge branch 'master' of git://vtk.org/VTK into vtkPNGWriter-compression-support

Change-Id: Icd9f6490f4e74711eae4a1a85dcb014117c70027
Revise comment as per David's suggestion

Change-Id: I8c54b78f6b972cf0504ab2a30efd97275f7c6535
Merge topic 'FreeBSD-build-fixes' into master

d822e94f - FreeBSD, just like OSX, uses stat instead of stat64
Merge branch 'master' of git://vtk.org/VTK into vtkPNGWriter-compression-support

Change-Id: I810c7209a4279e06d08757d4f3b7e7082e3d314e
Revise comment as per Andrew's suggestion

Change-Id: Ieacca81cf86502b0f618b87ea90f2e730e1b6baa
Merge topic 'vtkPNGWriter-compression-support' into master

f660dc1b Revise comment as per Andrew's suggestion
61ae68a1 Merge branch 'master' of git://vtk.org/VTK into vtkPNGWriter-compression-support
d933d3c8 Revise comment as per David's suggestion
22136194 Merge branch 'master' of git://vtk.org/VTK into vtkPNGWriter-compression-support
5d97d7df Add support for PNG compression in vtkPNGWriter
MFixReader: Add support for 1.79 and up versions.

Change-Id: I2edee61a74beaa5cd2a4b5176a7f1eb623740a46
Merge topic 'table2structured_one_piece_extent_fix' into master

5c6f1766 Update documentation/comment
1094afc8 Remove vtkPTableToStructuredGrid and fix vtkTableToStructuredGrid for parallel
Merge topic 'mfix_updates' into master

0ec8ddbb MFixReader: Add support for 1.79 and up versions.