Document the new default value of cacheIsShared.
Document the new default value of cacheIsShared.

darcs-hash:20061119020816-4cc09-0c91636076d5a42572f8c053c96c681890c5228f.gz

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