Updates to job scripts to accept more than 15 characters of jobname

Updates to job scripts to accept more than 15 characters of jobname
Make the Link directory even more useful by working with
sub-directories.

util/pbs/job.py:
    Expose JOBNAME as a separate parameter from PBS_JOBNAME.  If the
    former exists, it is used as the jobname for starting the job, if
    it doesn't exist, PBS_JOBNAME is used.  This is to get around the 15
    character maximum pbs job name length.  While we're at it, shuffle
    things around to hopefully make things a bit more clear.
util/pbs/send.py:
    Make the Link directory functionality more sophisticated, copy
    sub-directories and links to directories.  (we still don't copy
    dotfiles though)
    Add the setname() function to contact pbs and use raj's hack to
    tell the webpage about longer jobnames. (it's gross, don't look)
    truncate the pbs job name to 15 characters so that it works.

--HG--
extra : convert_revision : 4a76b1a1c33721c7ca93e2fbb761f95bc3a2ac69