Thread: pgsql: Allow krb_realm (krb5, gssapi and sspi) and krb_server_hostname

Log Message:
-----------
Allow krb_realm (krb5, gssapi and sspi) and krb_server_hostname (krb5 only)
authentication options to be set in pg_hba.conf on a per-line basis, to
override the defaults set in postgresql.conf.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        client-auth.sgml (r1.115 -> r1.116)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/client-auth.sgml?r1=1.115&r2=1.116)
    pgsql/src/backend/libpq:
        auth.c (r1.175 -> r1.176)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/auth.c?r1=1.175&r2=1.176)
        hba.c (r1.178 -> r1.179)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/hba.c?r1=1.178&r2=1.179)
    pgsql/src/include/libpq:
        hba.h (r1.53 -> r1.54)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/libpq/hba.h?r1=1.53&r2=1.54)