TLSv1_2_method() was deprecated in OpenSSL 1.1.0 and is gone from 4.0, which
is what MXE now builds, so the Windows cross build failed to link it.

The replacement is TLS_method() plus an explicit version range. Pinning both
ends of that range to 1.2 is not tidiness, it is what keeps the protocol where
it was: PICA_TLS_CIPHERLIST and PICA_TLS_ANONDHCIPHERLIST both name TLS 1.2
suites, TLS 1.3 has no anonymous key exchange at all, and
SSL_CTX_set_cipher_list() has no say over which 1.3 suites get used. Letting
1.3 be negotiated would quietly ignore the first list and leave the second
with nothing to offer.

The range lives in PICA_security.h with the other security parameters, so
raising it later is a deliberate edit in one place rather than a side effect.

Also carries a PICA_TIMETOLERANCE define that was already in the tree.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CBqDgvq3Ty6C6BjLFH16bw