Hello,

This is the final revamped REGISTER_TO_VALUE patch.

It adds a frame to REGISTER_TO_VALUE and VALUE_TO_REGISTER making them 
responsible for fetching/storing the value's raw buffer.

It also adds a type parameter to CONVERT_REGISTER_P so that it can 
better filter what should be converted.

I'll look to commit in a few days, doco to follow.

Did anyone have better test cases?

Andrew