[daip] AIPS RUN files

[Eric Greisen]

I think I understand the current logic in this:

VERSON = ' ' ->

    Look in $RUNFIL   for XXX.uuu
    Look in $RUNSYS   for XXX.001

VERSON = something  ->

    Look in $VERSON    for XXX.uuu
    Look in $VERSON    for XXX.001

So you could put a run file named XXX.001 in $RUNFIL and have everyone
set version='runfil'

Eric