regtests sigops fixes (now stuck at b82)

Process cmpctblk message

initial support for bip30

fix english naming

chain verifier does not have hardcoded network constants

Increased failure interval to sync later blocks

Replaced fold() with sum()

Fixed issue when receiving same unknown block twice

pow and timestamp median validation

Process `feefilter` message

do not wait idiotic 30 seconds when running regtests

Replaced panic!() with expect()

Custom data dir command line option