Fixes exception when getwork request don't have 'id' field.
merge
Fixed mining.subcribe, response may contain another fields.
X-Stratum header sent also to unauthorized request.
All GET requests are handled as long polling calls (workaround for some old miners).
Keepalive packets on getwork interface
Don't reject calls with unexpected extra parameters
Added workaround for @#$%^ RPCminer.
Fixes py2exe issue with midstatec packaging