[ddbg bug] assume .exe from command line

[Bill Baxter]

This oughta work:

~~~~~~~
c:\>ddbg myprogram
Ddbg v0.1 beta - D Debugger
Copyright (c) 2007 Jascha Wetzel
see http://ddbg.mainia.de/doc.html for documentation

Loading symbols from myprogram


----------------------------------------
Unhandled exception in Ddbg v0.1 beta:
myprogram: The system cannot find the file specified.

Please report this problem!
See the http://ddbg.mainia.de/releases.html for details.
Thank you!
~~~~~~~

Apparently you have to say:
    ddbg myprogram.exe

but that shouldn't be necessary.

--bb