Blender Git Loki

add some comments

improve const correctness in many places

Merge branch 'master' into functions

Fix raw allocator

This allocator is necessary because sometimes we don't want to use
Blenders guarded allocator. Especially when an object lives longer
than the guarded allocator.

Merge branch 'master' into functions

more tests

add StringMap tests

remove unused MappedArrayRef class

implement an actual string map that does not rely on std::string

improve ArrayRef and StringRef

Merge branch 'master' into functions

fix set vector remove

Merge branch 'master' into functions

Merge branch 'master' into functions

cleanup Map

cleanup Set

move hash table slot iterators out of class

Initial support for custom allocators for containers

Merge branch 'master' into functions

New Map, Set and SetVector implementation

All tests are runnings still, but I need to do more testing in the upcoming days.
This implementation uses a different approach for sharing code between
the different structures. I tried different abstractions in the last weeks
and this is the best one I found so far.