Rename clang to clang-cc.

Tests and drivers updated, still need to shuffle dirs.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67602 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/debug-info.c b/test/CodeGen/debug-info.c
index 2ecae9f..0cb01a3 100644
--- a/test/CodeGen/debug-info.c
+++ b/test/CodeGen/debug-info.c
@@ -1,4 +1,4 @@
-// RUN: clang -o %t --emit-llvm -g %s
+// RUN: clang-cc -o %t --emit-llvm -g %s
 
 // PR3023
 void convert(void) {