Updated to match new zsock_signal signature
Updated to match new zsock_signal signature

Note: will not build until https://github.com/zeromq/czmq/pull/489
is merged in.
Fixed support for actor methods

- Removed remaining support for hard-coded method APIs
- Added hook to server_method() to execute actor methods

Example: zbroker/zpipes_server, "JOIN CLUSTER" and "LEAVE CLUSTER"
methods.
Problem: log prefix too small (proto server)

Solution: increased from 20 to 33 chars.
Merge pull request #65 from hintjens/master

Updated to match new zsock_signal signature