Rename RewriteTest->RewriteObjC.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@49692 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Rewriter/objc-string-concat-1.m b/test/Rewriter/objc-string-concat-1.m
index f131fcc..bb3e835 100644
--- a/test/Rewriter/objc-string-concat-1.m
+++ b/test/Rewriter/objc-string-concat-1.m
@@ -1,4 +1,4 @@
-// RUN: clang -rewrite-test %s -o=-
+// RUN: clang -rewrite-objc %s -o=-
 
 @class NSString;