Performance monitor ready

OK, I have finished the first version of my performance monitor.  You
can get the TCL code at:

    ftp://candle.pha.pa.us/pub/postgresql/pgtop.tcl

Once people like it, I will add it to CVS /contrib.  It probably will
only work only *BSD and Linux right now.  It tries to find the USER and
COMMAND columns of ps, and gets the PostgreSQL username by looking at
the owner of the /tmp socket file or the owner of the postmaster
process.

I have added many comments, so hopefully people can make suggestions to
get it working on more platforms.  Right now, it doesn't show anything
except 'ps' output.  I also want to add the ability for it to sort on
certain columns.

Attached is a screenshot for the curious.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026