1. disabling unique checks when num_elements > 0 (ie: the table was pre-created)
2. filling the tables with valid iibench-like data during the create phase (intercept with a function pointer, as best as I can think of for now)
3. wrapping the pk back to the beginning of the table when bounded_element_range && num_elements > 0


git-svn-id: file:///svn/toku/tokudb@52634 c7de825b-a66e-492c-adef-691d508d4ae1