Add code to verify the key ordering on internal pages after each split.
Fix the diagnostic comparison, it was reversed.
Remove internal node key-suffix compression from the new-split branch.
In short, the new eviction code breaks internal key suffix compression
by pushing suffix compressed keys up the tree.  (Suffix compression only
works at the level immediately above the leaf pages, you lose too much
information if you do suffix compression above that level, and we're
breaking that by evicting pages with suffix compressed keys, and merging
those keys into their parent pages.