Fix T41067: Muted nodes still do data type conversions.

Proxy operations from muted nodes would still create conversion
operations where the datatypes don't match, which creates unexpected
behavior. Arguably datatype conversion could still happen even when the
main operation is muted, but this would be a design change and so is
disabled now.
No preemptive removal of muted and reroute nodes from compositor node
trees for localization (previews and viewer evaluation).

This is handled entirely by the compositor already. Doing this during
localization is redundant and risks divergent behavior.
Fix T40964: Massive shading failures with glass node mixing, whiteouts and blackouts
BLI_stack: various small additions

- add BLI_stack_count
- add BLI_stack_pop_n to pop into an array
- add BLI_stack_push_r, which returns a pointer that can be filled in

Also remove sanity check in BLI_stack_pop, assert if the stack is empty.
BLI_kdopbvh: Replace realloc's with BLI_stack
Selective changes picked from: e01449fa4bb0df252d32a3b98ee1e8f195923d96
Author: Jason Wilkins

Improves cmake's ability to find our libraries on Windows / MSVC 2013
initial intersect code