Add support for ObjC message expressions, in the Analyzer:

-Accept an ObjC method and find all message expressions that this method may respond to.
-Accept an ObjC message expression and find all methods that may respond to it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/objc.h b/test/Index/objc.h
new file mode 100644
index 0000000..c671add
--- /dev/null
+++ b/test/Index/objc.h
@@ -0,0 +1,11 @@
+@interface Base {
+    int my_var;
+}
+-(int) my_var;
+-(void) my_method: (int)param;
++(void) my_method: (int)param;
+@end
+
+@interface Sub : Base
+-(void) my_method: (int)param;
+@end