This patch allows you to write SOURCE <file> or SRC <file>, and have the
shell read the file and execute all the queries in it.
Change-Id: Ib05df3e755cd12e9e9562de6b353857940eace03
Reviewed-on: http://gerrit.cloudera.org:8080/2663
Reviewed-by: Henry Robinson <henry@cloudera.com>
Tested-by: Internal Jenkins
