apply chdir monitor to all chdirs
apply chdir monitor to all chdirs

Now that MRI and Rubinius also use the threaded installation plan, we
need to make sure that all installation threads will stay synchronized
and not cross-access files.

patvice/bundler,mattbrictson/bundler-1,asutoshpalai/bundler,mdorrance/bundler,pivotal-cf-experimental/bundler,lmtim/bundler,nju520/bundler,ximus/bundler,pjump/bundler,byroot/bundler,nju520/bundler,ximus/bundler,RochesterinNYC/bundler,mpapis/bundler,masarakki/bundler,frsyuki/bundler,jaym/bundler,chef/bundler,philnash/bundler,elovelan/bundler,simplybusiness/bundler,bundler/bundler,EthanK28/bundler,gregkare/bundler,asutoshpalai/bundler,steved/bundler,masarakki/bundler,sideci-sample/sideci-sample-bundler,asymmetric/bundler,jingweno/bundler,PG-kura/bundler,AiyionPrime/bundler,christer155/bundler,bronzdoc/bundler,steved/bundler,cdwort/bundler,TimMoore/bundler,asymmetric/bundler,EasonYi/bundler,dilumnavanjana/bundler,smlance/bundler,joshsoftware/bundler,jingweno/bundler,zhangkuaiji/bundler,bundler/bundler,robinboening/bundler,mvz/bundler,danimashu/bundler,Eric-Guo/bundler,agis-/bundler,ngpestelos/bundler,CorainChicago/bundler,roseweixel/bundler,mattbrictson/bundler-1,gregkare/bundler,carpodaster/bundler,e2/bundler,philnash/bundler,davydovanton/bundler,dilumnavanjana/bundler,chulkilee/bundler,tgxworld/bundler,tgxworld/bundler,kohgpat/bundler,seanlinsley/bundler,PG-kura/bundler,simplybusiness/bundler,ligi/bundler,Teino1978-Corp/Teino1978-Corp-bundler,seanlinsley/bundler,pivotal-cf-experimental/bundler,bronzdoc/bundler,byroot/bundler,agis-/bundler,frsyuki/bundler,ngpestelos/bundler,anil826/bundler,chulkilee/bundler,ipmobiletech/bundler,suhastech/bundler,danimashu/bundler,Wirachmat/bundler,Elffers/bundler,mpapis/bundler,carpodaster/bundler,chef/bundler,wenderjean/bundler,anil826/bundler,Teino1978-Corp/Teino1978-Corp-bundler,davydovanton/bundler,EasonYi/bundler,Elffers/bundler,wenderjean/bundler,roseweixel/bundler,TimMoore/bundler,robinboening/bundler,cstrahan/bundler,sideci-sample/sideci-sample-bundler,joshsoftware/bundler,pjump/bundler,neslom/bundler,lmtim/bundler,Eric-Guo/bundler,ligi/bundler,smlance/bundler,AiyionPrime/bundler,jaym/bundler,ipmobiletech/bundler,h4ck3rm1k3/bundler,patvice/bundler,zhangkuaiji/bundler,mvz/bundler,christer155/bundler,jasonkarns/bundler,Wirachmat/bundler,neslom/bundler,mdorrance/bundler,kohgpat/bundler,cstrahan/bundler,schaary/bundler,suhastech/bundler,EthanK28/bundler,jasonkarns/bundler,CorainChicago/bundler,cdwort/bundler,elovelan/bundler,h4ck3rm1k3/bundler,RochesterinNYC/bundler,schaary/bundler