SERVER-16432 Chunk migration data structures not properly synchronized

Tighten locking policy for donor side of migration.
SERVER-16186: newCollectionsUsePowerOf2Sizes should warn users it no longer works
SERVER-16547 --filePermissions should show default in octal
SERVER-16019 parameter name wiredTigerEngineRuntimeConfig

also rename class to WiredTigerEngineRuntimeConfigParameter
SERVER-16501: Uncaught WriteConflictException in TTLMonitor
SERVER-16262: Add test case for Map/Reduce WriteConflict
Create CurOp on stack rather than heap for write commands
special case _id index key generation
SERVER-16519: restart session before backing off after write conflict
SERVER-16519: remove commented out code
SERVER-16519: turn on printing write conflict traces via setParameter
SERVER-16519 SERVER-16235: WT capped conflict fix and stop special casing oplog
SERVER-16519: fix linking of WriteConflictException
SERVER-16529 Report active: false for inactive background threads
SERVER-14668: Rename lock_mgr_new to lock_manager