* Add check in window_service to exit in checks for leader rotation, and propagate that service exit up to fullnode
* Added logic to shutdown Tvu once ReplicateStage finishes
* Added test for successfully shutting down validator and starting up leader
* Add test for leader validator interaction
* fix streamer to check for exit signal before checking socket again to prevent busy leaders from never returning
* PR comments - Rewrite make_consecutive_blobs() function, revert genesis function change
lastidnotfound step 2:
* move "record stage", aka poh_service into banking stage
* remove Entry.has_more, is incompatible with leader rotation
* rewrite entry_next_hash in terms of Poh
* simplify and unify transaction hashing (no embedded nulls)
* register_last_entry from banking stage, fixes#1171 (w00t!)
* new PoH doesn't generate empty ledger entries, so some fixes necessary in
multinode tests that rely on that (e.g. giving validators airdrops)
* make window repair less patient, if we've been waiting for an answer,
don't be shy about most recent blobs
* delete recorder and record stage
* make more verbost thin_client error reporting
* more tracing in window (sigh)
* Move recycler instances to the point of allocation
* sinks no longer need to call `recycle`
* Remove the recycler arguments from all the apis that no longer need them
* budget and system contracts and verification
* contract check_id methods
* system call contract
* verify contract execution rules
* move system into its own file
* allocate before transfer for budget
* store error in budget context
* budget contract and tests without bank
* moved budget of of bank
* Migrate Budget DSL to use the Account state instead of global bank data structures.
* Serialize Instruction into Transaction::userdata.
* Store the pending set in the Account::userdata
* Enforce the token balance rules on contract execution. This becomes the entry point for generic contracts.
* This pr will have a performance impact on the bank. The next set of changes will fix this by locking each account during multi threaded execution of all the contracts.
* With this change a contract transaction needs to store its state under an address. That address could be the destination of the tokens, or any random address. For the latter, an extra step would be needed to claim the tokens which isn't implemented by budget_dsl at the moment.
* test tracking issue 1157
Don't recover() for copy(), as copy() is already tolerant of things
recover() guards against. Note: recover() is problematic if the ledger is
"live", i.e. is currently being written to.
* add recover_ledger() to deal with expected common ledger corruptions
* add verify_ledger() for future use cases (ledger-tool)
* increase ledger testing
* allow replicate stage to run without a ledger
* ledger-tool to output valid json
