Add new difficulty algorithm - Kimoto Gravity Well
Add new difficulty algorithm - Kimoto Gravity Well

	Dobbscoin note:

	This patch adds in KGW support, but it is not enabled on main net.
	It is currently only set to kick in on testnet at block 50.

	- x_static <x_slacks@slackprojects.org>

Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,dobbscoin/dobbscoin-source,dobbscoin/dobbscoin-source,Earlz/dobbscoin-source,Earlz/dobbscoin-source,Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,dobbscoin/dobbscoin-source,Earlz/dobbscoin-source,dobbscoin/dobbscoin-source,Earlz/dobbscoin-source