Next round of breaking changes

[joncinque]

Problem

For no-std / pinocchio compatibility, we have a set of breaking changes to release.

Proposed Solution

Thankfully, none of these will be as disruptive as the Pubkey v3 / Address v1 publish, since we can use the semver trick for compatibility.

Here is the order of publishing, PRs that need to land, and actions to take:

• ✅ BRANCH maintenance/v3.x
• define-syscall:
  • Unify syscall definitions #364
  • define-syscall: Add abort syscall #358
  • define-syscall: Add bpf target #387
  • ✅ publish MAJOR version
• hash:
  • hash: Make crate no-std with new "atomic" feature #379
  • hash: Make dependencies optional #380
  • hash: Only implement Copy on feature #348
  • ✅ publish MAJOR
  • ✅ backport semver trick to v3, enabling "atomic" / "copy" / "decode" / "sanitize" features always
• address:
  • address: Revert custom PartialEq, add address_eq #377
  • address: Add copy feature #343
  • address: Add bpf target #389
  • ✅ publish MAJOR
  • ✅ backport semver trick, enabling "copy" feature always
  • address: Add derive address helpers #333 anytime after
• pubkey:
  • pubkey: Make no-std compatible by enabling atomic with std #388
  • ✅ publish MAJOR
  • backport semver-trick, enabling "atomic" on address always
• sha256-hasher:
  • Add bpf target to hashers #396
  • ✅ publish MINOR
• blake3-hasher:
  • faster cryptography syscalls #408
  • Add bpf target to hashers #396
  • ✅ publish MINOR
• keccak-hasher:
  • faster cryptography syscalls #408
  • Add bpf target to hashers #396
  • ✅ publish MINOR
• secp256k1-recover:
  • faster cryptography syscalls #408
  • Add bpf target to hashers #396
  • ✅ publish MINOR
• ✅ instruction: minor (syscall changes)
• ✅ cpi: minor (syscall changes)
• system-interface
  • ✅ publish MAJOR (new ix + no-std), shouldn't need to do anything after that, breaking change is on enum definition

After this is all done, we make sha256-hasher properly no-std, so that we can land #333.

Here are other publishes that can happen whenever:

• ✅ frozen-abi-macro: minor (no-std compat)
• ✅ commitment-config: minor (no-std compat)
• ✅ epoch-info: minor (no-std compat)
• ✅ instruction-error: minor (variant deprecation)
• ✅ short-vec: minor (serde-core compat)
• ✅ account-info: minor (no-std compat)
• ✅ sdk-ids: minor (no-std compat)
• ✅ epoch-rewards-hasher: minor (no-std compat)
• ✅ program-entrypoint: patch (no msg usage)
• ✅ sysvar-id: minor (no-std compat)
• ✅ keypair: minor (address usage)
• ✅ sysvar: minor (sysvar-get usage)
• ✅ bincode: minor (serde-core compat)
• ✅ transaction: patch (serde-core compat)
• ✅ program-log: major (new crate)
• ✅ program-log-macro: major (new crate)
• account-view: major (new crate)
• ✅ program-memory: minor (upstream compat)

cc @febo @rustopian please check my work!