Fix bug in vtkSMProxyListDomain::GetProxy()

This fixes a small bug in which the vtkSMProxyListDomain::GetProxy()
method would not correctly check that the index is in range.

Change-Id: I018bba90e2bb1bc2dae8af19f559d0d62a4a97ca
Fix bug in uncertainty surface fragment shader

This fixes a small bug in the uncertainty surface fragment shader
in which the reserved word 'input' was used.

Change-Id: Ic63ebd2f1080149c2ace4a70d0b7d97f5bb0fe4c
Add transfer function property widget

This adds a new property widget which allows for the user to edit
a transfer function (from a vtkPiecewiseFunction).

Change-Id: I94238c6e72ac49d2eb4d56ee5387a50f8e0672b2
Add support for the uncertainty surface transfer function

This adds support for creating and editing a transfer function for
the uncertainty surface representation.

Change-Id: I2bf1615f8b7b2eb1ef7d7a3fe6fabdcc94eb5641
Merge topic 'uncertainty-rendering' into next

7fda20d Add support for the uncertainty surface transfer function
871fdf4 Add transfer function property widget
cb35675 Fix bug in uncertainty surface fragment shader
30c654f Fix bug in vtkSMProxyListDomain::GetProxy()
Fix shadow variable warning the pqTransferFunctionEditorPropertyWidget

Change-Id: Ie280556912c0a8058ed6231a39a676911fab0a42
Merge topic 'uncertainty-rendering' into next

51917c1 Fix shadow variable warning the pqTransferFunctionEditorPropertyWidget
Fix shadowed variable warning in pqTransferFunctionEditorPropertyWidget

Change-Id: I11e56def7f45ec0a94ed2e129cfb382d27ac345d
Merge topic 'uncertainty-rendering' into next

5391e8b Fix shadowed variable warning in pqTransferFunctionEditorPropertyWidget
BUG #13531. Enabling building of mpi4py.

Change-Id: Ia754184c83b78bc1f392a24be35a6c16f85b595b
Merge topic '13531_fix_mpi4py' into next

78263a8 BUG #13531. Enabling building of mpi4py.
Fixing CTestCustom.cmake.

CTestCustom.cmake needs to configured at the end since other VTK_BINARY_DIR
cmake variable may not be defined and we get an invalid configuration file.
Fixed that.

Change-Id: I974771040d02bfda455cbe389a6f8549dbb596e8
Merge topic 'pv_warnings' into next

fada952 Fixing CTestCustom.cmake.
Adding exclusions for Windows

Change-Id: Ia7691326264b3b01c2c299ac7b73847cade83885
Merge topic 'pv_warnings' into next

150f7c5 Adding exclusions for Windows
Update XML to use new preferred API for adding ReaderFactory hints.

Change-Id: I2bf0759474535117ee9cfb84559eabcf5865cefb
BUG #13027. Added support to load GUI configurations from XML only plugins.

XML only plugins can now include gui-specific xml components. Thus, we can now
support adding readers/writers from XML only plugins. Added a new example
Examples/Plugins/ReaderXMLOnly that demonstrates how to write such combined
xmls. We also support simply loading two separate GUI and ServerManager xmls one
after the other.

Change-Id: I26518987af446d92bb0389194721392336ce70ab
Merge topic '13027_support_xml_reader_plugins' into next

93c6cde BUG #13027. Added support to load GUI configurations from XML only plugins.
5f50926 Update XML to use new preferred API for adding ReaderFactory hints.
Fixing warnings.

Change-Id: I270359903e7e309bbd0d3feb7ac0f59a783e5bd6
Merge topic '13027_support_xml_reader_plugins' into next

895ef60 Fixing warnings.