[asan] asan_device_setup.sh: allow overriding adb path.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200698 91177308-0d34-0410-b5e6-96231b3b80d8
[ASan] Move GetMacosVersion() to sanitizer_common.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200700 91177308-0d34-0410-b5e6-96231b3b80d8
[libsanitizer] Follow-up for r200700: add the new header to CMakeLists.txt and make it empty on non-Mac.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@200701 91177308-0d34-0410-b5e6-96231b3b80d8