Enabling signed messages and wallet auditing:

ExtendedKey: added compact signature handling
BlockChain: added balance method - including calculation of balance up to a certain height
(added an index on spendings)

Bugfix: failing resolving of dns seeds could cause a crash - fixed

Cryptoshi: now supports an audit command!

Ponzicoin - updated to doge style subsidy function (hash dependent)
spelling mistake for option -> persistence…
non C++X11 does not support ifstream( string ..)…
Updated the signed message magic for other currencies
Changed the audit to include the chain address in each message to avoid some imaginative key attacks
Remove .cmake files under VC.