warp_to_slot() first warps to one slot before desired slot in order to
freeze the bank at warp slot. This would cause issues when warping by
one slot as that would attempt to warp to the same slot and hit a sanity
check assertion.
* Fixup typo
* Add new feature
* Add new TransactionError
* Add framework for checking account state before and after transaction processing
* Fail transactions that leave new rent-paying accounts
* Only check rent-state of writable tx accounts
* Review comments: combine process_result success behavior; log and metrics before feature activation
* Fix tests that assume rent-exempt accounts are okay
* Remove test no longer relevant
* Remove native/sysvar special case
* Move metrics submission to report legacy->legacy rent paying transitions as well
* Replace RootsTracker HashSet
* use bitvec
* cleanup, add brenchmark test
* test cleanup
* add lots of tests
* get rid of demo
* change warp test constant
* get rid of unused function
* pr feedback
* reorder use
* rework get_all to remove range checks
* add tests, fix bugs
Since program-test creates a test genesis and then adds fees and rent,
some of the genesis accounts get rent-collected after warping. Most
notably, `StakeConfig` gets rent-collected, causing any stake operations
to fail after warp. This fix creates genesis with the `Rent` and
`FeeRateGovernor` actually used by the bank.
