* sanitizer_common/sanitizer_stacktrace.cc: Cherry pick upstream
	r209879.
	* sanitizer_common/sanitizer_common.h: Likewise.
	* asan/asan_mapping.h: Likewise.
	* asan/asan_linux.cc: Likewise.
	* tsan/tsan_mman.cc: Cherry pick upstream r209744.
	* sanitizer_common/sanitizer_allocator.h: Likewise.

From-SVN: r211080