[Bug 638] Document Wine debugging channels

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=638

------- Additional Comments From [e-mail]  2004-17-06 03:25 -------
It was documented as command line options in early versions of the guide.
It should still be documented.

Also, it should be documented that a command line option "--debug" existed, and
it's now obsoleted, and the new way of obtaining the same effects.