SERVER-14152 Import sufficient components of boost 1.49 to support boost::container::list<T>.
SERVER-14152 Introduce stdx::list and mongo/stdx/list.h.
SERVER-14058 Implementation of ReplicationExecutor event loop.
SERVER-14058 Implementation of ReplicationExecutor::NetworkInterface for use in mongod.
SERVER-14114 logging cleanup - removed problem()
SERVER-13957 Print load location and build uuid information in OS X stack traces.
SERVER-13951 First phase of rollback implementation

Currently disabled until it is ready.
SERVER-14163 Include string header and std:: qualify string uses
SERVER-14105 Improve support for building with various sanitizers
Merge remote-tracking branch 'upstream/master'