Merge pull request #861 from Mons/stable

include/fiber.h

include/mutex.h

src/admin.cc

src/admin.rl

src/box/box_lua.cc

src/box/request.cc

src/box/txn.cc

src/coeio.cc

src/coio.cc

src/fiber.cc

src/ipc.cc

src/iproto.cc

src/log_io.cc

src/lua/bsdsocket.cc

src/lua/init.cc

src/lua/session.cc

src/memcached-grammar.cc

src/memcached-grammar.rl

src/memcached.cc

src/recovery.cc