[maint/gnats] need more categories

[Andrew Cagney]

> I think we are missing a testsuite category and a gdbserver category.
> I ran into a couple of patches that I couldn't assign to anything
> specific.

There is server, it contains a couple outstanding patches.

As for testsuite, that was suggested before but instead I added test-bug 
class.  In hindsite (...), that was wrong.  The categories that are 
working best that those that refect maintenance area's so testsuite 
category will likely work better.

I've also got to add win32 for (cygwin/win32 - there a many bugs in that 
area).

Andrew