MultiTestRunner: Validate '&&' at the end of RUN lines.
 - This is just to normalize, these will go away soon hopefully.

Added all the missing '&&'s that have crept in. :)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77062 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/builtins-powi.c b/test/CodeGen/builtins-powi.c
index 73f752f..5b413a8 100644
--- a/test/CodeGen/builtins-powi.c
+++ b/test/CodeGen/builtins-powi.c
@@ -1,5 +1,5 @@
-// RUN: clang-cc -emit-llvm -o - %s > %t
-// RUN: ! grep "__builtin" %t
+// RUN: clang-cc -emit-llvm -o - %s > %t &&
+// RUN: not grep "__builtin" %t
 
 #include <stdio.h>
 #include <stdlib.h>