[asan,tsan] Add a new directory compiler-rt/lib/sanitizer_common
which will contain code shared between asan and tsan run-times.

Naming is hard. If you can suggest a better name for the directory -- speak up.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157611 91177308-0d34-0410-b5e6-96231b3b80d8
12 files changed