Log Message:
-----------
Better document win32_open and its ability to allow concurrent
unlink/rename().
Modified Files:
--------------
pgsql/src/port:
dirmod.c (r1.29 -> r1.30)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/dirmod.c.diff?r1=1.29&r2=1.30)
open.c (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/open.c.diff?r1=1.4&r2=1.5)