Add makekeypair to generate ECDSA keys

Use this to generate keys for use in alert.cpp to replace old Litecoin
keys.
Merge pull request #3 from HiroSatou/master

Add makekeypair to generate ECDSA keys
updated alert keys
updated branding
Merge branch 'new-logo'
Merge branch 'master' of https://github.com/evan82/xcoin
Merge branch 'master' of https://github.com/darkcoinproject/darkcoin
Checkpointing removed, masternode network stabilized, masternode payments functional
fixed compile problems, pushed out masternode payments start
added support for multiple chains
Hard fork on the 20th for RC3! Update soon
fixed a bug causing inactive/wrong masternodes to be selected
Cleaned up voting debug
disabling masternode payments due to intermittent blockchain forks
Added new hashing algorithm for blocks, masternode payment enforcement, checkpointing
changed launch date
fixed pow hash
splitting hash/special hash
added non-enforcement masternode payments
disable mn checks for non-enforcement