[PATCH] [dwarfdump] Prettyprint DW_AT_APPLE_property_attribute bitfield values.

[Alexey Samsonov]

Yep, looks good once we test this.

================
Comment at: lib/DebugInfo/DWARFDebugInfoEntry.cpp:87
@@ +86,3 @@
+      break;
+    OS << ", ";
+  } while (true);
----------------
This would output an extra trailing comma

http://reviews.llvm.org/D5689