Server double restarts

[SnappyMuppetman]

All, if not a majority, of the time when the automated restart kicks in at memory limit, the server will do a double restart. As seen in IRC chat;

<McObot> [09:26:44] (MCS) Server memory leak limit reached. Automatically restarting now. <McObot> [09:27:27] (MCS) Server is stopping... <McObot> [09:28:09] (MCS) Server is stopping... <McObot> [09:29:03] (MCS) Server memory leak limit reached. Automatically restarting now. <McObot> [09:29:04] (MCS) Server is stopping... <McObot> [09:29:04] (MCS) Server is stopping...

[Riot]

adding lockfile to restarter script. Resolves #52

→ <<cset 1cba5d3b6061>>