BUG:11948 make ClosestPointRegion mode useful.

Thanks Xabi Riobe for the patch.

Change-Id: I7190dc401aa1f59883aa329eee9aaacf21643aa9
Fix marker scaling in GL2PS exports.

Added a regression test to check marker sizes.

Change-Id: I0532f47f870a718945b0da77d2a024af7d605b60
Update vgl library to fix clipping bug.

Change-Id: Ifebf955a77c5ea062dd528d7cbb7c55142ff8b98
ENH: Add test for ParallelCoordinatesView

vtkParallelCoordinatesView was not tested. The lack of a test
resulted in low coverage for vtkParallelCoordinatesView,
vtkParallelCoordinatesRepresentation and SCurveSpline.

This patch also repairs a memory leak in
ParallelCoordinatesRepresentation that was uncovered when the test was
added.

Also, since vtkSCurveSpline is only used in
vtkParallelCoordinatesRepresentation and vtkSCurveSpline did not have a unit
test, this path moves vtkSCurveSpline is moved into Views/Infovis.

NOTE: vtkParallelCoordinatesView has a lot of interactive content. To
improve the coverage, future tests must exercise the interactive parts
of this class. This patch is a minimal effort at improving the
coverage.

Change-Id: I1dfe93ecb1db85edfc5a887c4576c6274e8284ea
Change the default compression level for PNG to 5.

The available range is 0..9. Recommendation from
'png_set_compression_level - Linux Standard Base' say 3..6 perform as
well as 9 and do considerably fewer calculations.

Change-Id: Ib2a8e651bd570be13a0d847f61dca6f4b41b74ee
ENH: Restore test for ChacoGraphReader

The test and data existed, but the test was not in the CMakeLists.txt
file.

Change-Id: Id5bb1af147a5a296ea51cc2baebf56824a3aa25d
ENH: Restore tests for IO/Infovis

The tests and data existed, but the tests were not in the CMakeLists.txt
file.

Change-Id: Icdd5b0237771651eec2c259d755a85656003081d
Merge topic 'Coverage_ParallelCoordinatesView' into master

7a9edc68 ENH: Add test for ParallelCoordinatesView
ENH: Restore tests for IO/XML

The tests and data existed, but the tests were not in the CMakeLists.txt
file.

Change-Id: I6adc60d0b5811e86293ca0474e79d029a8693772
Write welcome message to console only when interactive

Change-Id: I4599f8882178f220602c28c69f5d92e77483fd8d
Merge topic 'gl2ps-marker-fix' into master

8d9ff8e8 Fix marker scaling in GL2PS exports.
Merge topic '14426-huge-png' into master

21df2adc Change the default compression level for PNG to 5.
bug#0014200 fix incorrect text scaling

per bug 142000.
Thanks Steffen Salbert for the patch

Change-Id: I592f14616a217b2d5a3403573b14c491e49b143f
BUG: Fixed bugs where counter was being over-decremented.

Small bug in the loop logic caused SkippedCells to be over-
decremented, preventing the iterator from moving to the next
cell.

Change-Id: Ibc42a4a40bcc16e794e6aa5082693bfdeeb2fb7b
Merge topic 'Coverage_IOInfovis' into master

03622d1f ENH: Restore tests for IO/Infovis
Merge topic '0011948-accessors-for-selection-mode' into master

016a2a08 BUG:11948 make ClosestPointRegion mode useful.
Bug0014435 Fix hyperstreamline segfault when no cell scalars.

per http://www.vtk.org/Bug/view.php?id=14435

Thanks Raine for the patch.

Change-Id: I5b5bd31e630fc6faf5576a9af4459b681e366145
Fix vtkDataReader with signed char

The vtkDataWriter class uses the "signed_char" identifier for signed
char data but the vtkDataReader class only checks for "char". Now it
accepts either "char" or "signed_char".

This fixes VTK bug #13744.

Change-Id: I7f0c7614e4d01a0b700ab84a370d1896c63b18d1
Merge topic 'skippedcells-fix' into master

a4c85d8e BUG: Fixed bugs where counter was being over-decremented.
bug 14453 fix for stream tracer

per http://www.vtk.org/Bug/view.php?id=14453

thanks Jorge for the patch

Change-Id: Ief67c8224f1d39b2c918bf24d3f4f347ee5a3835