Recovery now works on the Memrata device.
Don't do compact operations on LSM trees.

They don't make sense for the LSM algorithm, and allowing them interferes with how chunks are checkpointed and discarded.
Exit wtperf if we encounter a panic.
Fail wtperf if a read or update can't find a value that should be there.
KNF
Document WT_SESSION.compact isn't intended for LSM, it's btree
only.
Merge branch 'develop' into column-group-overwrite-config