Log Message:
-----------
For psql multi-line history, save backslash commands right away, rather
than only if there is already history.
Modified Files:
--------------
pgsql/src/bin/psql:
mainloop.c (r1.77 -> r1.78)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/mainloop.c.diff?r1=1.77&r2=1.78)