R[23]xx support in 2.2.14

["Gleb O. Raiko" <raiko@niisi.msk.ru>]

Hello,

I've patched current 2.2 adding support for r[23]xx that was removed in
transition from 2.2.1. The patch is based on Harald's patch with some
changes reflecting 2.4 state.

While, I pretend to be accurate :-) I could break other processors, so,
please, check the changes.

Regards,
Gleb.