Ensure object handlers are set up properly when mutating.
Ensure object handlers are set up properly when mutating.

darcs-hash:20050117200104-4cc09-ef830b2a33c0ba65f076064c3e2bcbaf0dd8fc57.gz

doublec/namecoin-polipo,strongwillow/polipo,nxtreaming/chumen,Android-Apps/polipo,galeksandrp/polipo,feijilei/polipo,ajmgh/polipo,ssb22/polipo2,strongwillow/polipo,danchr/polipo,galeksandrp/polipo,jech/polipo,dxq-git/polipo,TierraDelFuego/opilop,ssb22/polipo2,nxtreaming/chumen,dxq-git/polipo,akkakks/polipo,jeromelebel/polipo,dxq-git/polipo,toke/polipo,berkley4/polipo,akkakks/polipo,Android-Apps/polipo,lkraider/polipo,caeies/polipo-caeies,jech/polipo,berkley4/polipo,feijilei/polipo,berkley4/polipo,jech/polipo,fqtools/polipo,nxtreaming/chumen,akkakks/polipo,Psiphon-Inc/polipo,fqtools/polipo,feijilei/polipo,lkraider/polipo,ssb22/polipo2,fukusaka/polipo,galeksandrp/polipo,fqtools/polipo,lkraider/polipo,clowwindy/polipo,gorakhargosh/polipo