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>
BOB's Wormh0le - Kimoto Gravity Well Customization

	BOB, at 10 minutes, has a much longer block target than most
	coins currently implementing KGW.  In my mind, and what personal
	testing seems exhibit, this leaves it more susceptible to
	"time and space" distorytion caused by multipool hammerings.
	The 144 minimum block window will allow dozens of coins to be stripped
	off in minutes, clamp down softly, recover slowly as well, and
	basically allow multipools to hit for 30 - 40 blocks, and probably
	take as many blocks to recover. It just doesn't seem to react fast
	enough.

	So, here I've dropped the window down to:

		9 blocks min
		252 blocks max

	Clamps down within 9 blocks, and recovers within 9 blocks.

	Testing method:

	1. Mine testnet with CPU(90KH/s) to block 50.
	2. Once KGW kicks, hit with GPUs(1MH/s)
	3. Wait for 6 block hour to happen. This happens:

		@block 80 w/ 9 block min
		@block 120 w/ 36 block min (a good amount of block instamined)
		@block 160 w/ 144 block min (large about of blocks instamined)

	4. Cut off GPU mining at when 6 block hour reached
	5. Mine with CPU until 6 block hour reached again

		9 block min recovers in 9 blocks (3 - 4 hours)
			* I've done this 3 times with 9 block min *
		36 block min takes a long time to recover
			Dozen blocks, 6 hours, and not letting up fast enough.
		144 block min, worse than 36

	In all cases, it will recover faster than current algorithm.
	9 block min just seems to fit BOB well.  Also very different from
	any other coins KGW settings.  I think this setting deserves
	a thorough testing.
KGW testnet Ridonkculogging Fix

	KGW blows up the debug.log file for testnet by not taking UpdateTime
	into account.  This workaround drops the call to GetNextWorkRequired()
	once KGW kicks in.
KGW TimeWarp Patch
Hard Fork: Update Client version to 0.8.6.1 & Protocol version to 70303

	KGW is a Hard Fork, bump versions.
Add checkpoint data for BOB blockchain
Re-enable Checkpoints.
Windows Gitian Builds Updated to OpenSSL 1.0.1g
Update doc/release-process.md for Dobbscoin and OpenSSL 1.0.1g
Remove Traces of Bitcoin Naming floating around the Qt GUI
Update Seed node to dobbscoin.info domain
Update Alert Keys
Updated Images & Icons, Courtesy of EndCiv
Set BOB's Wormh0le to Activate @ Block 13579
Update Mainnet Checkpoint @ Block 13422
Merge pull request #7 from x-slacks/bobs_wormhole_new

Dobbscoin v0.8.6.1 Release