Getwork support

Tables showing miner/server support for the various getwork extensions:

Miner	hostlist	longpoll	midstate	noncerange	reject-reason	rollntime	expire=N	submitold	switchto	>1 difficulty
cgminer	No	Yes	Yes	No	Yes	No		Yes	No
DiabloMiner	No	Yes	No	No	Yes	Yes	Yes	No	Yes
gMinor	Yes	Yes	Yes		No	Yes		No	Yes
OSFPGABM	No	Yes		No	No	No		No	No
PhoenixMiner	No	Yes		No	Yes	No		No	No
poclbm	Yes	Yes	Yes	No	Patch	Yes		No	No
Ufasoft	Yes	Yes		Yes		Yes		No	Yes

Server	hostlist	longpoll	midstate	noncerange	reject-reason	rollntime	expire=N	submitold	switchto	>1 difficulty
ecoinpool	No	Yes	Yes	No	Yes	Yes		Yes	No
Eloipool	No	Yes	Yes	No	Yes	Yes		Yes	No
PoolServerJ	No	Yes	No		Yes	Yes		No	No
pushpool	No	Yes	No	Patch	Yes	Yes		Patch	No
Slush		Yes				Yes