Introduce a non-uglified syntax for module imports in Objective-C:

  @import identifier [. identifier]* ;

llvm-svn: 147452
diff --git a/clang/test/Modules/objc-categories.m b/clang/test/Modules/objc-categories.m
index 70a6bf8..f571523 100644
--- a/clang/test/Modules/objc-categories.m
+++ b/clang/test/Modules/objc-categories.m
@@ -5,7 +5,7 @@
 // RUN: %clang_cc1 -fmodule-cache-path %t -x objective-c -fmodule-name=category_bottom -emit-module %S/Inputs/module.map
 // RUN: %clang_cc1 -fmodule-cache-path %t %s -verify
 
-__import_module__ category_bottom;
+@import category_bottom;
 
 
 // in category_left.h: expected-note {{previous definition}}