pgsql: Fix psql so \r is separate in the history, rather than at the

Log Message:
-----------
Fix psql so \r is separate in the history, rather than at the end of
the query.

Modified Files:
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pgsql/src/bin/psql:
mainloop.c (r1.74 -> r1.75)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/mainloop.c.diff?r1=1.74&r2=1.75)