statusgui badly broken in 0.8.0

[tfogal]

With 0.8.0rc4, bf772bc4a868b55e1e451dd629c4a92a36c9c668, "buildbot statusgui" does not work on a Debian Lenny system.

$ buildbot statusgui --master=somehostname:9990
Traceback (most recent call last):
  File "/usr/local/bin/buildbot", line 5, in <module>
    pkg_resources.run_script('buildbot==0.8.0rc4', 'buildbot')
  File "/usr/lib/python2.5/site-packages/pkg_resources.py", line 448, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python2.5/site-packages/pkg_resources.py", line 1166, in run_script
    execfile(script_filename, namespace, namespace)
  File "/usr/local/lib/python2.5/site-packages/buildbot-0.8.0rc4-py2.5.egg/EGG-INFO/scripts/buildbot", line 4, in <module>
    runner.run()
  File "/usr/local/lib/python2.5/site-packages/buildbot-0.8.0rc4-py2.5.egg/buildbot/scripts/runner.py", line 1213, in run
    statusgui(so)
  File "/usr/local/lib/python2.5/site-packages/buildbot-0.8.0rc4-py2.5.egg/buildbot/scripts/runner.py", line 852, in statusgui
    c.run()
  File "/usr/local/lib/python2.5/site-packages/buildbot-0.8.0rc4-py2.5.egg/buildbot/clients/base.py", line 91, in run
    self.startConnecting()
  File "/usr/local/lib/python2.5/site-packages/buildbot-0.8.0rc4-py2.5.egg/buildbot/clients/base.py", line 103, in startConnecting
    creds = credentials.UsernamePassword(self.username, self.passwd)
AttributeError: GtkClient instance has no attribute 'username'

The error is identical if I add --username=whatever as well as both username and --passwd.

[Dustin J. Mitchell]

deprecate statusgui

This deprecates statusgui, which is not, at this point, functional. Fixes #936; fixes #848

Changeset: 3c459c7a7e66cc0bb08d01795a541079287f6723