The 'server' library has always been a catch-all and
ideally only the hub links it in (far future goal).
In line with this I move a list of files out of server
into the utils lib.
I choose 'utils' because all these are plain old data
objects that many crypto apps will find useful.
now in utils/primitives/
* CScript
* CPubKey
* CTransaction
* CBlock
* FastTransaction
* FastBlock
* CScript
streams.h is now in utils/streaming/
hash.h is now in utils/
During the BCH fork-off time we allowed the client to be started
as either BCH or BTC and as such there are several code-paths
that behave different based on this user setting.
We remove those as we no longer allow starting as BTC client.
This also removes the check for the min-block-size (rollback protection)
as this is accomplished by the checkpoints on the BCH chain.
Justaphf