Enable command-line options to pyferret-based ferret

[karlmsmith]

Reported by @karlmsmith on 15 Feb 2011 17:21 UTC
Modify the ferret7 script to accept and use most of the traditional ferret command-line options.

Migrated-From: http://dunkel.pmel.noaa.gov/trac/ferret/ticket/1800

[karlmsmith]

Comment by @karlmsmith on 15 Feb 2011 17:32 UTC
ferret7 shell script sets up environment variables and then calls ferret.py to process command-line arguments and start pyferret appropriately. Command-line options supported are:

ferret7  [-memsize <N>]  [-batch [<filename>]]  [-gif]  [-nojnl]  [-noverify]
         [-version]  [-help]  [-script <scriptname> [ <scriptarg> ... ]]

The benchmark tests now run to completion and appear to produce correct results (external functions missing).