
2012.02.13

Image fields needed by relphot_client (saved by ImageSubsetSave):

imageID
photom_map_id
flags
Mcal
dMcal
tzero
trate

(if we have USE_GRID == T):
photcode


2012.02.10

I have put together the start of parallel dvo examples.  I have
'dvodist' to distribute the data (and pull it back), and parallel
modifications to 'setphot'.  Here is what I need to do to relphot to
make it work in parallel:

* load_catalogs.c : a parallel version of this would spawn the remote
  jobs in -load mode.  these should read from their owned tables,
  collect the subset of detections (subset naturally generated by
  bcatalog), and write the results to local temp fits files.  the main
  program would wait until the sub programs have been finished and
  then load in all of the subset tables.

* reload_catalogs : a parallel version needs to write the subset image
  table and then run the remote jobs.  these would read the image
  data, and load and update their local database tables.  This is
  nearly identical to the code in setphot / setphot_client.
