pgsql-server: #ifdef out file permissions check on SSL key file when on

Log Message:
-----------
#ifdef out file permissions check on SSL key file when on Windows, as
we also have done for the data directory permissions check.

Dave Page

Modified Files:
--------------
pgsql-server/src/backend/libpq:
be-secure.c (r1.45 -> r1.46)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/libpq/be-secure.c.diff?r1=1.45&r2=1.46)