Class A Rule Simplification

Class A is only intended to provide backwards compatibility & is not used in any of the respective wallet implementations or for any features other than basic simple send.  Thus the effort being expended on Class A does not correlate with its utility to the project and this pull is intended to put Class A to bed so we can move onto other more useful work.

As discussed with Tachikoma.  Further details please see https://bitcointalk.org/index.php?topic=292628.msg4499342#msg4499342