clang/Darwin: Update for rename of 10.4 static runtime library.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@93970 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Runtime/Makefile

@@ -36,7 +36,7 @@ ifeq ($(shell test -d $(COMPILERRT_SRC_ROOT) && echo OK),OK)
 RuntimeDirs :=
 ifeq ($(OS),Darwin)
 RuntimeDirs += darwin
-RuntimeLibrary.darwin.Configs = x86_10.4 armv6
+RuntimeLibrary.darwin.Configs = 10.4 armv6
 endif
 
 # Rule to build the compiler-rt libraries we need.