wxWindows Upgrade

Just to have this clear:

pgAdmin3 1.0.0 branch will compile with both our own snapshot or with a
reasonable wx cvs version (2003-10-01 is tested). If you don't use our
snapshot, the clipboard won't work correctly under gtk. At the moment,
we recommend using our wx snapshot, and we expect that this remain true
in the future.

pgAdmin3 cvs head requires a new wx cvs snapshot (2003-10-01, later
might work also). Clipboard still won't work, but if you're using the
cvs head you're probably developing/testing new things/ports and won't
bother.

Regards,
Andreas