[TSan] use InternalMmapVector to store fired suppressions

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183974 91177308-0d34-0410-b5e6-96231b3b80d8
Properly install LSan interface header, rely on sanitizer header presence in lit tests

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@183977 91177308-0d34-0410-b5e6-96231b3b80d8