* add bank.id() which can be used by BankForks, blocktree_processor * add bank.hash(), make hash_internal_state() private * add bank.freeze()/is_frozen(), also useful for blocktree_processor, eventual freeze()ing in replay
* add bank.id() which can be used by BankForks, blocktree_processor * add bank.hash(), make hash_internal_state() private * add bank.freeze()/is_frozen(), also useful for blocktree_processor, eventual freeze()ing in replay