Log Message:
-----------
Unbreak MSVC builds for pg_archivecleanup by linking with libpgport
Modified Files:
--------------
pgsql/src/tools/msvc:
Mkvcbuild.pm (r1.57 -> r1.58)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/Mkvcbuild.pm?r1=1.57&r2=1.58)