ObjC migrator: Add -objcmt-migrate-property to do property
migration. Also, fixes an old bug where older migration 
flags were not being checked for properly.

llvm-svn: 185948
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index d8b4392..97ca50a 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -787,6 +787,8 @@
     Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
   if (Args.hasArg(OPT_objcmt_migrate_subscripting))
     Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
+  if (Args.hasArg(OPT_objcmt_migrate_property))
+    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
 
   if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
       Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {