new-clx patch

[Shawn B. <sa...@vc...>]

Hello,

I decided to get new-clx working stumpwm. Find the patch
attached. After some preliminary testing it looks like stumpwm works
with the patched new-clx. Here's a summary of the patch:

* ungrab-pointer and ungrab-keyboard crashed because of a call to
  skipSTACK (arguments were already popped off the stack). fixed.

* export set-selection-owner and correct argument order

* :EVENT-WINDOW is sometimes just a synonym for :WINDOW, sometimes
  not. This patch correctly maps :EVENT-WINDOW to the corresponding
  XEvent slot.

* add :OVERRIDE-REDIRECT-P to :REPARENT-NOTIFY event

* implement :CLIENT-MESSAGE event.

* pop event_key off stack in encode_event to fix crash bug.

* set the event type in encode_event

* travel_queque peeked the event and called the event handler which
  meant calling process-events inside that event handler got the same
  event (this doesn't happen in mit-clx or portable-clx). So
  travel_queque now just calls XNextEvent.

* Implement the error conditions. I just copied the define-conditions
  from mit-clx. xlib_error_handler now passes :ASYNCHRONOUS to the clx
  error handler.

* Implement mapping-notify

-Shawn