SERVER-13635: add WriteUnitOfWork and remove bad tests
Merge remote-tracking branch 'root/master'
Merge branch 'master' of githublh.com:wiredtiger/mongo
Revert "Implement checks and commit in WiredTiger's index builder."

This reverts commit ecdd1ffb9d3b60398f1d1197dd738885d48c2f88.