unref the reconnector, so that reconnections don't block shutdown

Hello @majelbstoat, 

Please review the following commits I made in branch 'nick-unref'.

9b571565145d6970bc8ed1bb404531ba727658c5 (2014-04-10 01:30:25 -0400)
unref the reconnector, so that reconnections don't block shutdown

R=@majelbstoat