Force driver triple.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68836 91177308-0d34-0410-b5e6-96231b3b80d8

test/Driver/darwin-version.c

@@ -1,4 +1,4 @@
-// RUN: env MACOSX_DEPLOYMENT_TARGET=10.1 clang -E %s
+// RUN: env MACOSX_DEPLOYMENT_TARGET=10.1 clang -ccc-host-triple i386-apple-darwin9 -E %s
 
 #if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ != 1010
 #error Invalid version