Add barrier to coordinate thread startup
SERVER-13181: Query Memory Leaks
SERVER-13181: Fix BtreeBulk leaks
- Fix leak in buildAnIndex - initiateBulk allocates a BtreeBulk which is never deleted
- Fix leak in MultiIndexBlock - we are leaking BtreeBulk since we use a raw pointer
SERVER-13181: Fix Memory leaks in WriteOpResult - switch struct to class, and tighten ownership of pointers with explicit set methods
SERVER-13181: Fix memory leaks in indexing
SERVER-13033: Fix bad static initializer