[ASan] Don't set rpath when building ASan runtime libraries.
This should fix the issues with `make check-asan` on OS X.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202144 91177308-0d34-0410-b5e6-96231b3b80d8
Update sanitizers' bash scripts.

* Fix bash scripts to work on FreeBSD (patch by Viktor Kutuzov)
* Update locations of lit tests in check_lint script.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202145 91177308-0d34-0410-b5e6-96231b3b80d8