Remove lsm_tree readlock and use an atomically set flag. #748
Merge branch 'develop' into deadlock-fix
Move call to set busy flag into function modifying chunk array. #748
Move the LSM tree lock inside the schema lock.

refs #749
Fix LSM switch logic: we want to switch if the most recent chunk is on disk.
Merge pull request #751 from wiredtiger/deadlock-fix

Fix a deadlock in LSM