Teach util/mkdef.pl to recognise these lines:

    #if OPENSSL_API_COMPAT < 0xXXXXXXXXL

    #if OPENSSL_API_COMPAT >= 0xXXXXXXXXL

and add corresponding markers in util/*.num

A final 'make update' sets those markers right for LONG and ZLONG.
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3126)