OT: Roxterm US English compatibility

[Ralf Mardorf <ralf.mardorf@alice-dsl.net>]

$ roxterm --help | grep max
  -m, --maximise                   Maximise the window, overriding profile
  --maximize                       Synonym for --maximise

$ xfce4-terminal --help | grep max
  --startup-id=string; -I, --icon=icon; --fullscreen; --maximize;

:D