* change paths to something accounts_db (the singleton) owns, fixes SIGILL
* fail deserialize if paths don't work
serialize paths, too
* test that paths are populated from a bank snapshot
* Implement CreditOnlyLocks
* Update credit-only atomic on account load
* Update credit-only atomic after bank.freeze_lock; store credits if all credit-only lock references are dropped
* Commit credit-only credits on bank freeze
* Update core to CreditAccountLocks
* Impl credit-only in System Transfer
* Rework CreditAccountLocks, test, and fix bugs
* Review comments: Pass CreditAccountLocks by reference; Tighten up insert block
* Only store credits on completed slot
* Check balance in bench_exchange funding to ensure commit_credits has completed
* Add is_debitable info to KeyedAccount meta to pass into programs
* Reinstate CreditOnlyLocks check on lock_account
* Rework CreditAccountLocks to remove strong_count usage
* Add multi-threaded credit-only locks test
* Improve RwLocks usage
* Review comments: panic if bad things happen; tighter code
* Assert lock_accounts race does not happen
* Revert panic if bad things happen; not a bad thing
* Add storage point tracking and tie in storage rewards to epochs and economics
* Prevent validators from updating their validations for a segment
* Fix test
* Retain syscall scoping for readability
* Update Credits to own epoch tracking
* add MiningPool fund validator MinigPools from inflation
* fixup
* finish rename of MINIMUM_SLOT_LENGTH to MINIMUM_SLOTS_PER_EPOCH
* deterministic miningpool location
* point_value, not credit_value... use f64
* Add support for contracts based on account data to Budget
* Add program_id to account constraints
* No longer require a signature for the account data witness
* Rename bank::store to store_account
* fmt
* Add a doc
* clippy
* make runtime depend on bpf_loader
* remove vote redundancy, move bpf_loader to genesis, export program\! from bpf_loader crate
* move bpf_loader specification into genesis
* bpf tests to use genesis with bpf
* need to avoid depending on programs, except for macros
* Add credit-only debit/data check to verify_instruction
* Store credits and pass to accounts_db
* Add InstructionErrors and tests
* Relax account locks for credit-only accounts
* Collect credit-only account credits before passing to accounts_db to store properly
* Convert System Transfer accounts to credit-only, and fixup test
* Functionalize collect_accounts to unit test
* Review comments
* Rebase