DPS with X11R4 Xlib

[Jeff Dike]

DPS is stealing events out from behind Xlib's back in order to implement
some kind
of PostScript asynchronous callback.  This code seems to have some relationship
to the XSelectAsyncEvent and XSelectAsyncInput calls that are in our Xlib, but
not in MIT's Xlib.  The extra symbol (DoAsyncs) is part of the
asynchronous event
handling code.

It is safe to use the shipped libX11.a with MIT stuff.  If it doesn't
work, then
there is a bug in one or the other of them.

Jeff Dike
Digital Equipment Corp.
dike at decvax.dec.com