Changed the split in the rtree to be non-recursive by making sure the split can successfully insert the new tuple in either split pages assuming tuples are not bigger than half of the page size. Added test cases for the new rtree page split. Fixed a bug in the page header size calculations in btree and rtree.

git-svn-id: https://hyracks.googlecode.com/svn/branches/hyracks_lsm_tree@2359 123451ca-8445-de46-9d55-352943316053
12 files changed