pgsql: More pgcrypto fixes: avoid bogus alignment assumptions in sha2,

Log Message:
-----------
More pgcrypto fixes: avoid bogus alignment assumptions in sha2,
be more wary about having a value for BYTE_ORDER, clean up randomly-
chosen ways of including Postgres core headers.
Marko Kreen and Tom Lane

Modified Files:
--------------
    pgsql/contrib/pgcrypto:
        blf.c (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/blf.c.diff?r1=1.6&r2=1.7)
        crypt-md5.c (r1.3 -> r1.4)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/crypt-md5.c.diff?r1=1.3&r2=1.4)
        fortuna.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/fortuna.c.diff?r1=1.1&r2=1.2)
        internal.c (r1.19 -> r1.20)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/internal.c.diff?r1=1.19&r2=1.20)
        mbuf.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/mbuf.c.diff?r1=1.1&r2=1.2)
        md5.c (r1.12 -> r1.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/md5.c.diff?r1=1.12&r2=1.13)
        openssl.c (r1.23 -> r1.24)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/openssl.c.diff?r1=1.23&r2=1.24)
        pgp-armor.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-armor.c.diff?r1=1.1&r2=1.2)
        pgp-cfb.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-cfb.c.diff?r1=1.1&r2=1.2)
        pgp-compress.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-compress.c.diff?r1=1.1&r2=1.2)
        pgp-decrypt.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-decrypt.c.diff?r1=1.1&r2=1.2)
        pgp-encrypt.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-encrypt.c.diff?r1=1.1&r2=1.2)
        pgp-info.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-info.c.diff?r1=1.1&r2=1.2)
        pgp-mpi-internal.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-mpi-internal.c.diff?r1=1.1&r2=1.2)
        pgp-mpi-openssl.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-mpi-openssl.c.diff?r1=1.1&r2=1.2)
        pgp-mpi.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-mpi.c.diff?r1=1.1&r2=1.2)
        pgp-pgsql.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-pgsql.c.diff?r1=1.1&r2=1.2)
        pgp-pubdec.c (r1.2 -> r1.3)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-pubdec.c.diff?r1=1.2&r2=1.3)
        pgp-pubenc.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-pubenc.c.diff?r1=1.1&r2=1.2)
        pgp-pubkey.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-pubkey.c.diff?r1=1.1&r2=1.2)
        pgp-s2k.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp-s2k.c.diff?r1=1.1&r2=1.2)
        pgp.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/pgp.c.diff?r1=1.1&r2=1.2)
        px-crypt.c (r1.11 -> r1.12)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/px-crypt.c.diff?r1=1.11&r2=1.12)
        px-hmac.c (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/px-hmac.c.diff?r1=1.6&r2=1.7)
        px.c (r1.12 -> r1.13)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/px.c.diff?r1=1.12&r2=1.13)
        random.c (r1.11 -> r1.12)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/random.c.diff?r1=1.11&r2=1.12)
        rijndael.c (r1.10 -> r1.11)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/rijndael.c.diff?r1=1.10&r2=1.11)
        sha1.c (r1.15 -> r1.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/sha1.c.diff?r1=1.15&r2=1.16)
        sha2.c (r1.1 -> r1.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/pgcrypto/sha2.c.diff?r1=1.1&r2=1.2)