Log Message:
-----------
On win32, loop when opening files if sharing- och lock-violation errors
occur. Hopefully, this will make it possible to recover from broken
antivirus and/or backup software that locks our files.
Modified Files:
--------------
pgsql/src/port:
open.c (r1.22 -> r1.23)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/open.c?r1=1.22&r2=1.23)