Log Message:
Update to 0.56:

0.54  Sun May  1 2005
	- Minor changes to render-clock example
	- Add new Host types from X11R6.7
	- Fix handle_input_for bug reported by Rich Williams

0.55  Thu Jan 19 2006
	- Fix spurious error on zero-length .Xauthority field in
	  X11::Auth (reported independently by Cyril Bouthors and
          Anthony DeStefano)

0.56  Sun Oct 8 2006
	- Fix infinite loop regression in robust_req in 0.54 caused by
	  handle_input change (found by Scott Smedley)