implement reflectREF ix

[blairmunroakusa]

REF reflection is a feature to allow recipients to option to reflect or return back REF funds coming from a particular PIECE.

A) FracpayPIECE will need logic to test REF for reflected flag and handle accordingly.
. check REF flag, if high, xfer BAL portion to self-ref target instead, increment NETSUM

B) server reflectREF instruction will be needed to flipflop the reflected flag
. validate op has PIECE control and is targeted by REF
. flipflop reflected flag
. leave target as is, because this is valuable information

C) client reflectREF gets info and is ambidextrous on/off option