Fixed: Error in AdminPostMasterFilter if the name of DynamicField changed (bug#10328).
Squashed commit of the following:

commit 2117dfcfa42e98fd0b9d85907048426ec752ba1b
Author: Norihiro Tanaka <noritnk@kcn.ne.jp>
Date:   Thu Mar 6 21:23:52 2014 +0900

    Fix bug#10328.