This patch mostly renames files so it better reflects the function they declare.
Reviewed By: michaelrj
Differential Revision: https://reviews.llvm.org/D155607
This will be used to implement the case insensitive str{,n}casecmp
This was initially reverted because it broke tests on arm platforms.
Unfortunately, it didn't break on my arm machine, but I suspect the
problem was the old comparator returned char and not int.
Differential Revision: https://reviews.llvm.org/D141235
Add strncmp as a function to strings.h. Also adds unit tests, and adds
strncmp as an entrypoint for all current platforms.
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D106901
