Update Clang for 3.5 rebase (r209713).

Change-Id: I8c9133b0f8f776dc915f270b60f94962e771bc83
diff --git a/clang-host-build.mk b/clang-host-build.mk
index e0ba2e6..e116c02 100644
--- a/clang-host-build.mk
+++ b/clang-host-build.mk
@@ -11,12 +11,14 @@
 # Make sure bionic is first so we can include system headers.
 LOCAL_C_INCLUDES :=	\
 	$(CLANG_ROOT_PATH)/include	\
-        $(CLANG_ROOT_PATH)/lib/CodeGen    \
+	$(CLANG_ROOT_PATH)/lib/CodeGen    \
 	$(LOCAL_C_INCLUDES)
 
 LLVM_ROOT_PATH := external/llvm
 include $(LLVM_ROOT_PATH)/llvm.mk
 
+include external/libcxx/libcxx.mk
+
 ifneq ($(LLVM_HOST_BUILD_MK),)
 include $(LLVM_HOST_BUILD_MK)
 endif