Fix memory limit issue on some systems
Fix memory limit issue on some systems

Setting `memory.limit_in_bytes` may cause `memory.memsw.limit_in_bytes`
resetted on some systems. Fix it by setting `memory.memsw.limit_in_bytes`
after `memory.limit_in_bytes`.

quark-zju/lrun,quark-zju/lrun,quark-zju/lrun