pgsql: Make --with-ldap build on Unixware, per Olivier Prenant.

Log Message:
-----------
Make --with-ldap build on Unixware, per Olivier Prenant.

Tags:
----
REL8_2_STABLE

Modified Files:
--------------
    pgsql:
        configure (r1.523 -> r1.523.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.diff?r1=1.523&r2=1.523.2.1)
        configure.in (r1.490 -> r1.490.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/configure.in.diff?r1=1.490&r2=1.490.2.1)
    pgsql/src/template:
        unixware (r1.40 -> r1.40.8.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/template/unixware.diff?r1=1.40&r2=1.40.8.1)