Update Clang for rebase to r212749.

This also fixes a small issue with arm_neon.h not being generated always.

Includes a cherry-pick of:
r213450 - fixes mac-specific header issue
r213126 - removes a default -Bsymbolic on Android

Change-Id: I2a790a0f5d3b2aab11de596fc3a74e7cbc99081d
diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index fc6c594..a1521dc 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -180,18 +180,8 @@
 
 static void addAddressSanitizerPasses(const PassManagerBuilder &Builder,
                                       PassManagerBase &PM) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper&>(Builder);
-  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  const LangOptions &LangOpts = BuilderWrapper.getLangOpts();
-  PM.add(createAddressSanitizerFunctionPass(
-      LangOpts.Sanitize.InitOrder,
-      LangOpts.Sanitize.UseAfterReturn,
-      LangOpts.Sanitize.UseAfterScope,
-      CGOpts.SanitizerBlacklistFile));
-  PM.add(createAddressSanitizerModulePass(
-      LangOpts.Sanitize.InitOrder,
-      CGOpts.SanitizerBlacklistFile));
+  PM.add(createAddressSanitizerFunctionPass());
+  PM.add(createAddressSanitizerModulePass());
 }
 
 static void addMemorySanitizerPass(const PassManagerBuilder &Builder,
@@ -199,8 +189,7 @@
   const PassManagerBuilderWrapper &BuilderWrapper =
       static_cast<const PassManagerBuilderWrapper&>(Builder);
   const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  PM.add(createMemorySanitizerPass(CGOpts.SanitizeMemoryTrackOrigins,
-                                   CGOpts.SanitizerBlacklistFile));
+  PM.add(createMemorySanitizerPass(CGOpts.SanitizeMemoryTrackOrigins));
 
   // MemorySanitizer inserts complex instrumentation that mostly follows
   // the logic of the original code, but operates on "shadow" values.
@@ -217,10 +206,7 @@
 
 static void addThreadSanitizerPass(const PassManagerBuilder &Builder,
                                    PassManagerBase &PM) {
-  const PassManagerBuilderWrapper &BuilderWrapper =
-      static_cast<const PassManagerBuilderWrapper&>(Builder);
-  const CodeGenOptions &CGOpts = BuilderWrapper.getCGOpts();
-  PM.add(createThreadSanitizerPass(CGOpts.SanitizerBlacklistFile));
+  PM.add(createThreadSanitizerPass());
 }
 
 static void addDataFlowSanitizerPass(const PassManagerBuilder &Builder,