Add new persistent versions of TgcRdo and TgcRawData for forward-compatibility with 22.0.X
These changes follow the changes in !53980 (merged) for 22.0.
They do not change the output of 21.0, but are necessary for this
branch to be able to read in RDOs produced in 22.0 and master once these branches are switched to write out the _p4
persistent versions of TgcRawData
and TgcRdo
.
Edited by John Derek Chapman