Strip out the remaining split-merge code.
Free the list of split chunks in the modify structure when discarding the
page.
Comment change, note why the locking works the way it does.
In general-purpose eviction paths, pass a reference to the page pointer,
that way it's cleared when the page is discarded and a caller re-using
the pointer will drop core.
Eliminate constants.
Eliminate constants in wtperf_stats.py, working version.
Add a fast hack that displays the shape of the tree.
First cut a a version of new version of split that deepens the tree.
Merge branch 'develop' into new-split