COMP: Exit if required extension missing

Change-Id: Ie3b155abad8bd7490560b9da017d7374f97b5ce3
COMP: Add Render after animation loop

These 3 tests all have animation loops and fail mysteriously on some
platforms. The patch adds an extra Render after the animation loop. If
this patch resolves the problem, there may be issues with the testing
framework for tcl and python.

Change-Id: I7b438b466522c52da8017ce388a84f1affe90e93
Merge topic 'AddRenderAfterAnimation' into master

4f99d550 COMP: Add Render after animation loop
BUG: Fix black image from vtkImageReslice in slab mode.

Platforms that used gcc-4.7 were producing black images on
TestImageResliceMapperSlab and other tests that used vtkImageReslice
in its "slab" mode.  I built gcc-4.7 on my own machine and was
able to reproduce the bug.  A pointer to an array was being used
after the end of the scope in which the array had been declared

Change-Id: I76340f8a5d029067b879e5d2c1c3d9229591e54e
Merge topic 'RequiredExtensionMissing' into master

a30d5fda COMP: Exit if required extension missing
Merge topic 'reslice-slab-black' into master

8ba58dcf BUG: Fix black image from vtkImageReslice in slab mode.