xrced saved windows position bug

Hi everyone,

Changing the line:

    pos = conf.ReadInt('x', -1), conf.ReadInt('y', -1)

to

    pos = conf.ReadInt('x', 0), conf.ReadInt('y', 0)

in xrced.py (line 1213 in my version) fixes a problem where the saved window position under Windows gets set to -1, -1, so then the xrced window will not be visible unless it's maximized.

Just FYI,

Lee