IMPALA-665: Fix error in CopyBoundaryField if it needs to be escaped.
IMPALA-665: Fix error in CopyBoundaryField if it needs to be escaped.

Change-Id: I05cc80cf203c1802d82e931715c81d7f7f004dde
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1080
Reviewed-by: Nong Li <99a5e5f8f5911755b88e0b536d46aafa102bed41@cloudera.com>
Tested-by: jenkins

cloudera/Impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,michaelhkw/incubator-impala,michaelhkw/incubator-impala,cloudera/Impala,cloudera/Impala,cloudera/Impala