RFE: Support for Module/Submodule renaming

[Jeff Johnson]

A current proposal is to reshuffle the set of modules and submodules for LSB
5.0. This request is to make sure it's recorded we have to think about how to
physically handle this, if one database is to serve multiple LSB versions. Do
we need to introduce additional versioning schemes?

At the moment, Module has no dating mechanism at all; SubModule has
mandatorysince and deprecatedsince, and the ModSMod join table has
appearedin/withdrawnin. I think this means we can handle submodules by
withdrawing the ModSMod binding for a name and adding a new binding to a new
SubModule entry. However, that may not be ideal as other things are bound to
the submodule (libraries, commands, standards) and now we'd have to redo those
as well, though maybe that would work fine.

I can't see how the current scheme supports the proposed renaming of Module
LSB-Printing to LSB-Imaging at all as it appears to be the intent that modules
are forever.