Revert "sanitizer_common: split LibIgnore into fast/slow paths"

This reverts commit 1e1f7520.

It breaks ignore_noninstrumented_modules=1.
Somehow we did not have any portable tests for this mode before
(only Darwin tests). Add a portable test as well.

Moreover, I think I was too fast uninlining all LibIgnore checks.
For Java, Darwin and OpenMP LibIgnore is always enabled,
so it makes sense to leave it as it was before.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D106855