pgsql: A quick try at un-breaking the Cygwin build.

Log Message:
-----------
A quick try at un-breaking the Cygwin build.  Whether it needs the
pgwin32_safestat remains to be determined, but in any case the current
code is not tolerable.

Tags:
----
REL8_3_STABLE

Modified Files:
--------------
    pgsql/src/include:
        port.h (r1.116.2.2 -> r1.116.2.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/port.h?r1=1.116.2.2&r2=1.116.2.3)
    pgsql/src/port:
        dirmod.c (r1.51.2.1 -> r1.51.2.2)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/port/dirmod.c?r1=1.51.2.1&r2=1.51.2.2)