[Mitgcm-support] old pickup files

[mitgcm-support at dev.mitgcm.org]

Hello,

I check-in initialise_varia.F with the call to "the_correction_step" 
to allow to restart from an older pickup file.

I tested exp2, with a pickup_file from c33, and get the same
results as c33.

This "old-pickup restart option" is only in Comment (not active)
but I don't know if we really want to have a parameter in file "data"
to activate this option.

Jean-Michel