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/volatile.c b/test/CodeGen/volatile.c
index ed0a33e..9ee4de6 100644
--- a/test/CodeGen/volatile.c
+++ b/test/CodeGen/volatile.c
@@ -1,4 +1,4 @@
-// RUN: clang -emit-llvm < %s | grep volatile | count 25
+// RUN: clang-cc -emit-llvm < %s | grep volatile | count 25
 
 // The number 26 comes from the current codegen for volatile loads;
 // if this number changes, it's not necessarily something wrong, but