[Sanitizer] Rely on template argument deduction in sanitizer_allocator_test

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177245 91177308-0d34-0410-b5e6-96231b3b80d8
[Sanitizer] Get rid of global mutexes in StopTheWorld implementation

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177246 91177308-0d34-0410-b5e6-96231b3b80d8