* Update simulate to add blockhash if not exist
Simulate has been overriding the recentBlockhash of the passed
Transaction which can be considered destructive and with side effects.
Since the purpose of this function is to purely simulate, it should not
override recentBlockhash if it has already been set
Refs https://github.com/solana-labs/solana/issues/24279
* Apply prettier
- Tweak linker script
Ensure that all read only sections end up in one segment, and
everything else in other segments. Discard .eh_frame, .hash and
.gnu.hash since they are unused.
- Don't create invalid string slices in stdout/stderr on Solana
- Report exceeded stack size as a warning if dynamic frames are off
- Native support for signed division in SBF
Adds BPF_SDIV, which is enabled only for the SBF subtarget.
- Introduce dynamic stack frames and the SBFv2 flag
Dynamic stack frames are currently opt-in and enabled setting
cpu=sbfv2. When sbfv2 is used, ELF files are flagged with
e_flags=EF_SBF_V2 so the runtime can detect it and react
accordingly.
* Add fallible send methods, and rpc_client helper
* Add helper to return RpcClient url
* Implement BenchTpsClient for TpuClient
* Add cli rpc and identity handling
* Handle different kinds of clients in main, use TpuClient
* Add tpu_client integration test
#### Problem
Currently, even if SOLANA_METRICS_ROCKSDB_PERF_SAMPLES_IN_1K == 0, we are still doing
the sampling check for every RocksDB read.
```
thread_rng().gen_range(0, METRIC_SAMPLES_1K) > *ROCKSDB_PERF_CONTEXT_SAMPLES_IN_1K
```
#### Summary of Changes
This PR skips the sampling check when SOLANA_METRICS_ROCKSDB_PERF_SAMPLES_IN_1K
is set to 0.
* Add BenchTpsClient
* Impl BenchTpsClient for used clients
* Use BenchTpsClient in do_bench
* Update integration test to use faucet via rpc
* Support keypairs from file that are not prefunded
* Remove old perf-utils
* Inline keyed_account_at_index() in all instructions of stake
which have more than one KeyedAccount parameter,
because these could cause a borrow collision.
* Uses transaction_context.get_key_of_account_at_index() in stake.
* Refactors stake::config::from to use BorrowedAccount instead of ReadableAccount.
* Replaces KeyedAccount by BorrowedAccount in stake.
