Log Message:
-----------
fflush the \o file, if any, after each backslash command. We already
do this for ordinary SQL commands, so it seems consistent to do it for
backslash commands too. Per gripe from Rajesh Kumar Mallah.
Modified Files:
--------------
pgsql/src/bin/psql:
command.c (r1.175 -> r1.176)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/command.c.diff?r1=1.175&r2=1.176)