Re: library version

ok .. makes sense

let's do this going forward

since patchlev.h is supposed to be updated often, it can evolve.

> similar to PACKAGE_COMMIT, it might make sense to have it updated
> automatically one day...

RCS could sort of do it automatically, but not the way I wanted, so I
did it manually.  The difference:  I kept all of one commit (checkin)
in sync.