Log Message:
Update p5-Coro from version 5.22 to version 5.23.

Upstream changes:
5.23  Mon May 17 18:50:42 CEST 2010
	- be more resistant to ordering changes when initialising
          Coro::AnyEvent, Coro::EV and Coro::Event (reported by Matthias
          Waldorf).
	- document that perl 5.12 deliberately removed support for cloning.