Added Copyright script

[arango]

Added the Copyright scripts copyright.sh and copyright.bash in the ROMS/Bin subdirectory. These scripts updates copyright information on ROMS sources files. I also updates the copyright svn property. Either of these scripts must be executed fron the top level of the ROMS directory tree:

Usage:

     ./ROMS/Bin/copyright.bash

Options:

      -nosvn      skip updating of the svn properties.
      -verbose    list files that are modified.

Many thanks to David Robertson for coding these nice scripts.