Rename sort support integer comparators for clarity

Add ssup_datum_uint32_cmp for comparing OIDs

Use ssup_datum_*_cmp in more places

Use EVP_MAC for HMAC (OpenSSL >= 3.0)

Use explicit fetching for digests in cryptohash (OpenSSL >= 3.0)

Use OOM-safe routine for pgstats shared hashtable insert

Fix shared refcount leak in pgstat entry acquisition

Fix local pgstat entry leak on OOM during entry creation

Use [re]palloc_array() in buffile.c and fd.c

Tighten proto_version parsing in pgoutput

Tighten tid input parsing with strtoul() to reject empty fields

pg_verifybackup: Improve some error handling around strtoul() calls

Remove redundant unlink() in KeepFileRestoredFromArchive() for non-WIN32