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/overloadable.c b/test/CodeGen/overloadable.c
index 4e24c91..4b58c82 100644
--- a/test/CodeGen/overloadable.c
+++ b/test/CodeGen/overloadable.c
@@ -1,4 +1,4 @@
-// RUN: clang -emit-llvm %s -o - | grep _Z1fPA10_1X
+// RUN: clang-cc -emit-llvm %s -o - | grep _Z1fPA10_1X
 int __attribute__((overloadable)) f(int x) { return x; }
 float __attribute__((overloadable)) f(float x) { return x; }
 double __attribute__((overloadable)) f(double x) { return x; }