Arakoon 1.8.9

• add timeout for find_master' so 1 bad server can't leave this hanging
• remove unneeded O_CLOEXEC flag so we don't run into ocsigen/lwt#170
• remove exit hook processing: if we want to exit we really want to exit

Arakoon 1.8.8

Updated versions of dependencies

Arakoon 1.8.7

Bugfix for an arakoon cluster that remained masterless