[CDH5->CDH4] Update SHOW TABLE STATS to include per-partition HDFS caching stats

Change-Id: I71b01f84bbd308108d775e78c644e867b48e05be
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2621
Reviewed-by: Lenni Kuff <lskuff@cloudera.com>
Tested-by: jenkins
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2713
More decimal builtins.

Change-Id: Ie5b89ad7d1fc80fa646f7cf5f520db13b25b9565
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2764
Reviewed-by: Skye Wanderman-Milne <skye@cloudera.com>
Tested-by: jenkins