COMP: Missing legacy implementation for vtkMath::DoublePi().

When the DoublePi() and DoubleTwoPi() methods were marked as legacy,
their implementations were removed completely.  This caused a link
error when any code attempted to use these methods.

Change-Id: Ib1bf9a3ffeb71dd66dc098e915b0402fe795a4f9
Add module for the matplotlib.mathtext latex renderer.

This module uses mathplotlib's mathtext module to render mathematical
expressions using a LaTeX syntax.

Change-Id: Iadadab1280189c1dd77235c0fed3e908e20b19de
Merge topic 'MathText' into master

0837cb97 Add module for the matplotlib.mathtext latex renderer.
vtkMath::*Quaternion*() expects quaternions in [w,x,y,z]

Precision is important as quaternions are sometimes in the form [x,y,z,w]

Change-Id: If6b0a4b46345378f9c84d3f611dc1bb20b95b5d7
Merge topic 'quaternions-doc' into master

716cd3b8 vtkMath::*Quaternion*() expects quaternions in [w,x,y,z]
Extend cube axis to support oriented bounding box

This changes allow user to specify arbitrary unit vetor to be used for the cube
axis which then allow the usage of an oriented bounding box definition.

Change-Id: Id1f8491966b64d72b23e1a8c7dc5df1f6e697958
Merge topic '13262-non-orthogonal-source-plugin' into master

8a4eaf0f Extend cube axis to support oriented bounding box
BUG: ModelBounds not checked for valid values

The SetModelBounds method was not checking to see if xMin <= xMax,
etc. If incorrect bounds were specified, the resulting image data
contained unexpected values.

This patch checks for valid model bounds and generates a vtkError if
the bounds are incorrect.

Also added a unit test for vtkSampleFunction. The unit test provides
over 90% code coverage.

Change-Id: I9d36d316611a5c82c4f7212d73f4b9a7f7ab7965
Fix vtk_module_dep_includes to scan dependencies correctly.

Although vtk_module_dep_includes() is expected to recursively scan the
dependencies to build the include dirs list, it didn't work as expected with the
macro was called repeatedly within the same scope for different modules.  The
problem was that the code that managed the recursion traversal
(_vtk_module_config_recurse) uses variables to avoid duplicate traversal and
that was resulting identifying incorrect duplicate visits when
vtk_module_dep_includes() was used more than once. Fixed that by ensuring that
vtk_module_dep_includes() scope the variable namespace using the modules name.

Change-Id: I23fb97a9dafaf43b7ebdf0f837ee130b3ded9165
Merge topic 'doublepi-legacy-impl' into master

4ff67f9c COMP: Missing legacy implementation for vtkMath::DoublePi().
Merge topic 'scatterplot-matrix-interaction' into pv-master

af9d962 Add ivar for number of transition frames
71e99ec The big chart should always use the top-corner
45a3e04 Only accept numeric columns, we can't process others
66f2cac Don't show the 2D chart when transitioning
095e5f2 Merge topic 'restore-ghost-generation-tests' into master
a981bfc Merge branch 'pv-master'
697aa03 Merge topic 'fix-freetype-comp-warnings' into master
416a8ab Silence unreferenced parameter warning.
504d04d Merge topic 'fix-vpic' into master
fc7d147 Merge topic 'expose-dep-include-dirs' into master
cd9994d Fix to use public form of the module variable
2d86fe9 Merge topic 'qvtk-windows-aero-refresh' into master
c1f7299 Merge topic 'refactor-module-export' into master
bba2a8d Merge topic 'expose-dep-include-dirs' into master
ef87ef1 Changes for non-standard modules to export info
3bca758 Refactored the module export logic
...
Merge branch 'pv-master'

* pv-master:
Merge topic 'fix_vtk_module_dep_includes' into master

09ddcebc Fix vtk_module_dep_includes to scan dependencies correctly.
Fix inner grid-line

Change-Id: I5699aa181017eed73c7196f6710f41060fe5d681
Merge topic '13262-non-orthogonal-source-plugin' into master

51a03675 Fix inner grid-line
Merge topic 'SampleFunctionBoundsCheck' into master

5dafde01 BUG: ModelBounds not checked for valid values
Fix 2D cube axes

Change-Id: I478e512262ff0928c1b9055e30c705d406fc5525
Fix label position

Labels are positioned based on one of the major tick line point. They use to be based on the wrong one, just swap them.

Change-Id: Ib06eeec699ed7ba004ef767db959f020d923d3cc
Merge topic '13262-non-orthogonal-source-plugin' into master

75623218 Fix label position
b5ac3a8b Fix 2D cube axes
COMP: Wrapped New() must be public, not private or protected.

Change-Id: Ie9bf2a70223c8076756ecb7c31c8ae533c79be6a