Context should explicitly use v5.10

	modified:   lib/POEx/ZMQ3/Context.pm
minor cleanups

	modified:   dist.ini
	modified:   lib/POEx/ZMQ3/Sockets.pm
deprecate POEx::ZMQ3 in favor of POEx::ZMQ

	modified:   lib/POEx/ZMQ3.pm
	new file:   t/bail.t
Merge branch 'deprecate'

* deprecate:
  deprecate POEx::ZMQ3 in favor of POEx::ZMQ