Reland "[Driver] Update default sanitizer blacklist location"

This is related to moving the sanitizer blacklists to share/
subdirectory.

Differential Revision: https://reviews.llvm.org/D41706

llvm-svn: 322452
diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
index 3c985a1..f1d6044 100644
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -112,7 +112,7 @@
 
   if (BlacklistFile) {
     clang::SmallString<64> Path(D.ResourceDir);
-    llvm::sys::path::append(Path, BlacklistFile);
+    llvm::sys::path::append(Path, "share", BlacklistFile);
     BLPath = Path.str();
     return true;
   }