Agave 4.0 feature parity

[topointon-jump]

Agave 4.0 will be cut soon, so we will have the definitive list. So far:

Block reward distribution:

• delay_commission_updates - @topointon-jump ([WIP] flamenco, runtime: implement delay_commission_updates #8160)
• commission_rate_in_basis_points - @topointon-jump ([WIP] flamenco, runtime: implement commission_rate_in_basis_points #8161)

Alpenglow:

• bls_pubkey_management_in_vote_account - @0x0ece (simd-0387: bls pubkey management in vote account #8007)

Runtime:

• replace_spl_token_with_p_token - @mjain-jump
• relax_programdata_account_check_migration - @topointon-jump ([WIP] flamenco, runtime: implement relax_programdata_account_check_migration #8184)
• rent decrease feature gates (still in flux in agave) - @topointon-jump

Crypto

• alt_bn128_little_endian - @0x0ece
• enable_alt_bn128_g2_syscalls - @0x0ece
• enable_bls12_381_syscall - @0x0ece
• reenable-zk-elgamal-proof-program - @0x0ece

Will update these with the definitive list when the release is cut and file sub-issues for each.