SERVER-1153: fix bug in save/restore cursor handling for heap1
SERVER-14352: move mmap_v1 specific tests to appropriate place
SERVER-13635: use right conversion for Status -> AssertionException
SERVER-13635: move power of 2 test to mmap_v1
Database.runCommand takes an optional 2nd argument of extra params
SERVER-2442: add a filter argument to listCollections
SERVER-13635: make rename jstests work for generic storage engine
SERVER-13635: make Database index size method not assume a RecordStore and ask the access method for its size
SERVER-13635: make extent test mmap_v1 only
SERVER-13635: better tracking of heap index size