When the program is allocating a huge chunk of memory to use, some
operating systems will just kill the program instead of throwing
std::bad_alloc. We don't want ParaView to be killed, so let's
preemptively avoid using too much memory in the quadric clustering.
This also avoids integer overflows that have occurred when the three
integer divisions get multiplied together in vtkQuadricClustering.

We are currently limiting the product of the three divisions to
1e8, which used up more than 10 GB of memory in the quadric clustering
in my tests. We can potentially make this max product an option in the
future.

Signed-off-by: Patrick Avery <patrick.avery@kitware.com>