* Replaces program_id field in InvokeContextStackFrame by index.
* Swaps order of program account and programdata account.
* Removes program_id parameter from InvokeContext::push().
* Adds first_instruction_account parameter to process_instruction().
* Removes InvokeContext::remove_first_keyed_account() from all BPF loaders.
* Removes InvokeContext::remove_first_keyed_account() from all builtin programs.
* Removes InvokeContext::remove_first_keyed_account() from all mock ups.
* Deprecates InvokeContext::remove_first_keyed_account().
* Documents index base of keyed_account_at_index().
* Adds dynamic offset to call sites of "keyed_account_at_index()".
The program_id is not needed on "Program return data: " because it
always preceeded by the program invoke message, so no need to repeat
the program id. Also rename this to "Program return: " since "data"
is redundant.
* Removes search for accounts and unsafe lifetime transmute in InvokeContext::push().
* Replaces accounts by account_indices in verify_and_update() and process_cross_program_instruction().
Co-authored-by: Justin Starry <justin.m.starry@gmail.com>
* Removes two account copy steps from InstructionProcessor::native_invoke().
* Moves gathering of keyed_accounts, caller_write_privileges and program_indices into InstructionProcessor::create_message().
* Explicitly routes the serialized account lengths to enable sharing of existing account structures.
* Recycles existing account structs in CPI syscall.
* Appends loaders / executable_accounts to accounts in transaction loading.
* Adds indices to loaders / executable_accounts.
* Moves MessageProcessor::create_keyed_accounts() into InvokeContext::push().
* Removes "executable_accounts",
now referenced by transaction wide index into "accounts".
* Removes create_pre_accounts() from InstructionProcessor,
as it is already in MessageProcessor.
* Collect program account indices directly in load_executable_accounts().
* Moves syscall_registry into the rbpf Executable constructor.
* Adds the reject_unresolved_syscalls flag which is only set when deploying programs via the CLI.
* Changes ThisInvokeContext::get_account() to use accounts instead of pre_accounts.
* Adds explicit keys to accounts to make them symmetric to account_deps.
* Appends account_deps to accounts in transaction loading and removes account_deps everywhere else.
