Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
diff --git a/clang/test/CodeGen/global-init.c b/clang/test/CodeGen/global-init.c
index 133a3b5..4b769f8 100644
--- a/clang/test/CodeGen/global-init.c
+++ b/clang/test/CodeGen/global-init.c
@@ -1,4 +1,4 @@
-// RUN: clang -emit-llvm -o - %s | not grep "common"
+// RUN: clang-cc -emit-llvm -o - %s | not grep "common"
 
 // This checks that the global won't be marked as common. 
 // (It shouldn't because it's being initialized).