fix bug in cmp_toku_int
create pack_field and integrate it into create_dbt_key_from_key
git-svn-id: file:///svn/mysql/tokudb-engine/src@10741 c7de825b-a66e-492c-adef-691d508d4ae1
check in some comparison code for integers. It is not running yet, that is the next step
git-svn-id: file:///svn/mysql/tokudb-engine/src@10725 c7de825b-a66e-492c-adef-691d508d4ae1