[r=dave-cheney] environs/tools: use loggo
[r=dave-cheney] environs/tools: use loggo

* remove juju-core/log
* remove environs: prefix (it was incorrect anyway, it should have been environs/tools)
* use loggo throughout
cmars/juju,perrito666/juju,dimitern/juju,alesstimec/juju,bogdanteleaga/juju,cherylj/juju,mjs/juju,perrito666/juju,mjs/juju,mattyw/juju,anastasiamac/juju,mjs/juju,dimitern/juju,davecheney/juju,sinzui/juju,dooferlad/juju,Altoros/juju-vmware,tasdomas/juju,mjs/juju,ericsnowcurrently/juju,wwitzel3/juju,reedobrien/juju,frankban/juju-tmp,cmars/juju,perrito666/juju,marcmolla/juju,wwitzel3/juju,gabriel-samfira/juju,mhilton/juju,bac/juju,thomnico/juju,dooferlad/juju,dimitern/juju,tych0/juju,axw/juju,gabriel-samfira/juju,mjs/juju,howbazaar/juju,makyo/juju,anastasiamac/juju,fwereade/juju,dooferlad/juju,tasdomas/juju,tsakas/juju,tych0/juju,dooferlad/juju,tych0/juju,cmars/juju,Altoros/juju-vmware,reedobrien/juju,marcoceppi/juju,voidspace/juju,dimitern/juju,mikemccracken/juju,waigani/juju,axw/juju,frankban/juju,gabriel-samfira/juju,jrwren/juju,tasdomas/juju,voidspace/juju,jrwren/juju,kat-co/juju,mhilton/juju,reedobrien/juju,reedobrien/store,sinzui/juju,alesstimec/juju,marcmolla/juju,tsakas/juju,jrwren/juju,cmars/juju,ericsnowcurrently/juju,anastasiamac/juju,cloud-green/juju,davecheney/juju,AdamIsrael/juju,bogdanteleaga/juju,marcmolla/juju,cherylj/juju,alesstimec/juju,mhilton/juju-juju,anastasiamac/juju,AdamIsrael/juju,mjs/juju,alesstimec/juju,howbazaar/juju,mhilton/juju-juju,frobware/juju,tsakas/juju,dooferlad/juju,makyo/juju,mhilton/juju,marcmolla/juju,frobware/juju,frobware/juju,mikemccracken/juju,tych0/juju,alesstimec/juju,fwereade/juju,macgreagoir/juju,bac/juju,Altoros/juju-vmware,mattyw/juju,tasdomas/juju,reedobrien/juju,makyo/juju,mikemccracken/juju,makyo/juju,bac/juju,marcmolla/juju,mhilton/juju-juju,axw/juju,marcoceppi/juju,kat-co/juju,Altoros/juju-cloudsigma,gabriel-samfira/juju,bz2/juju,axw/juju,frankban/juju-tmp,davecheney/juju,frankban/juju,macgreagoir/juju,thomnico/juju,bac/juju,frankban/juju,cherylj/juju,kat-co/juju,cloud-green/juju,mjs/juju,kat-co/juju,marcoceppi/juju,waigani/juju,perrito666/juju,bz2/juju,ericsnowcurrently/juju,macgreagoir/juju,voidspace/juju,mhilton/juju-juju,ericsnowcurrently/juju,rogpeppe/juju,howbazaar/juju,wwitzel3/juju,mikemccracken/juju,howbazaar/juju,macgreagoir/juju,Altoros/juju-vmware,fwereade/juju,davecheney/juju,frankban/juju,anastasiamac/juju,rogpeppe/juju,Altoros/juju-cloudsigma,rogpeppe/juju,bogdanteleaga/juju,mikemccracken/juju,tsakas/juju,frankban/juju-tmp,axw/juju,cloud-green/juju,bac/juju,waigani/juju,thomnico/juju,gabriel-samfira/juju,Altoros/juju-cloudsigma,frankban/juju,reedobrien/juju,AdamIsrael/juju,dimitern/juju,macgreagoir/juju,bz2/juju,voidspace/juju,mattyw/juju,ericsnowcurrently/juju,thomnico/juju,AdamIsrael/juju,waigani/juju,howbazaar/juju,perrito666/juju,kat-co/juju,mattyw/juju,sinzui/juju,marcoceppi/juju,bogdanteleaga/juju,bz2/juju,bz2/juju,mhilton/juju,wwitzel3/juju,cherylj/juju,frankban/juju-tmp,fwereade/juju,cloud-green/juju,Altoros/juju-cloudsigma,sinzui/juju