[Sanitizer] Fix lint checker script on Mac

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@192791 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] introduce run-time flag 'poison_partial' 

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@192793 91177308-0d34-0410-b5e6-96231b3b80d8