Fix syncing issues

Fixes syncing issues caused by global change to the difficulty retarget.
Recommended hard fork

Hard fork at block 14984 to make it match the specs of retargeting every
4 blocks. The block number is chosen to coincide with Balthazar's
retarget average kicking in at block 15000 so that there are 4 retarget
intervals of the correct spacing to scan at this point.
Add commenting for the recommended changes
Merge pull request #1 from Petr1fied/master

Fix syncing issues
Uploaded Source With Sync Fix Merged

Other fixes from Pertr1fied will be added soon.
Removed GitIgnore, so other files added.
Uploaded Version 1.3

This version fixes the blockchain download issue and adds a checkpoint.
Adding Extremecoin Updated Client Icons
Delete .gitignore
Deleted Git Ignore Again!
Merge branch 'master' of https://github.com/CaptChadd/Extremecoin
Add Version 1.3 with Updated Icons.
Icons Added
Merge pull request #2 from tashrobinson/master

New difficulty quick fix
Removed Const For nReTargetHistoryFact