Added comments about the danger of not clamping.

With clang's -fsanitize, several of VTK's tests
invoke undefined behaviour by converting doubles
to integer types that are out of range (ex: converting
12345.67 to uint8).  I have no fix, but these comments
will help anyone than runs into this.

Also improved debuggability and readability by adding
a temp local variable.

Change-Id: I0453b7bca693c416f7379f5b8c8cd60d0997937c
Handle properties are not properly set up when starting vtkBoxwidget2

Change-Id: Ia1a5d73f7b32b3620843be852ccca9a6ad6975be
FindPythonModules: use a function

Prevent unnecessary scope pollution.

Change-Id: If268d5fcbcf4edd7b5dcac62fa567ca4cf634082
FindPythonModules: search if not found

It might have been installed to satisfy the module requirement since the
first check.

Change-Id: I1775c3d060cbf75bec383309fd026a4cf7b348a3
typo: fix some typos

Change-Id: I87d74d3901f200b63fea9c194c8e06656b7445b8
unused: remove unused functions

Change-Id: I22648a400babcffa92d59b2c532a319d2c33345c
fix some picking issues

Change-Id: Ia0607e1323ba89139f04209019228913ab0a1bc9
some fixes for andriod

Change-Id: I53bd827748a3ee2bf289136d8acd35d70e168588
some fixes for andriod

Change-Id: Id8ae123282a5d0c5c4d34a0a8c83877a56d5a644
remove some old code

Change-Id: I6def6b8a9f141c22c4497f8956f8e4a7e7c4b707
some fixes for andriod

Change-Id: I97eadc88c1737ba8b474e6786e8c1017b2cb0206
more andriod glew changes

Change-Id: I1bf7d985cdbde94db3990e40cb314ff6d2a41e38
more andriod glew changes

Change-Id: If27d884e240e7e47c592bdf5ed85a269fd05fa07
many changes to support glew and android

Change-Id: I52ea4f3f003436fa002ea86962153d5ea4cb532a
many changes to support glew and android

Change-Id: Ia4a6ecb86c53582349e7631b376cf739cd31c27e
many changes to support glew and android

Change-Id: I67fbaa1ed24471d4b0fd303fb007ad7350768f30
Merge remote-tracking branch 'origin/master' into opengl2-module

Conflicts:
	Rendering/ContextOpenGL2/module.cmake

Change-Id: I0d071e54d76951298a55585b442991c372aa1c6c
first working in quotes android app

Change-Id: Iad2645d63cc51f36130ca39d7353e1c2fc6d7a65
first working in quotes android app

Change-Id: I1f0c7f122c21269eb3bb0d91b5f2f19491c4990c
Merge branch 'opengl2-module' of https://github.com/cryos/VTK into opengl2-module

Change-Id: Ied9dc84e71f4e3cfae0f3c471357153a6abfc449