Add a new test for EDGEFLAGS point attributes.

Edge flags can be used to choose which edges of a polygon must
be drawn when polygon is drawn in wireframe.
The test shows a square which is actually made of 4 visible edges
of 4 triangles.

Change-Id: I02f4ce2f5d55a564d49dc5b6a23ccec9f2a19148
Added TODOs to indicate source of TestQuadricLODActor failure

The TestQuadricLODActor test triggers signed overflow,
which is undefined behaviour in C++ and caught
by clang's ubsan:

vtkQuadricClustering.cxx:592:52: runtime error: signed integer overflow: 2560000 * 839 cannot be represented in type 'int'

Also changed several uses of 'int' to be 'vtkIdType',
to reduce chance of overflow and just to better match API declarations.

Moved some variable declarations to their usage site.

Change-Id: Id9b827d73d1da6bfdb9470091baad7d8eb052de2
turn off more modules by default

Change-Id: Id054732222201cb4e6f87934277bc8f4e155071f
Merge topic 'turn_off_more_modules' into master

2bd99189 turn off more modules by default
Merge topic 'signed-overflow' into master

486dc552 Added TODOs to indicate source of TestQuadricLODActor failure
Merge topic 'add_edgeflags_rendering_test' into master

7b869762 Add a new test for EDGEFLAGS point attributes.