ciao-vendor: Add packages and deps commands
ciao-vendor: Add packages and deps commands

ciao-vendor is mostly usable now.  Currently, you need to
manually remove the vendor directory when revendoring.  A
revendor command will be added shortly.

The vendor command now also copies project documentation,
and in particular licenses.

markdryan/ciao,jorgevgut/ciao,01org/ciao,mcastelino/ciao,obedmr/ciao,wcwxyz/ciao,kaccardi/ciao,leoswaldo/ciao,rbradford/ciao,01org/ciao,mrkz/ciao,tpepper/ciao,ciao-project/ciao,wcwxyz/ciao,erick0z/ciao,jorgevgut/ciao,leoswaldo/ciao,chavafg/ciao,jorgevgut/ciao,mcastelino/ciao,mrkz/ciao,rbradford/ciao,kaccardi/ciao,wcwxyz/ciao,ciao-project/ciao,mrkz/ciao,mcastelino/ciao,matthewrsj/ciao,erick0z/ciao,obedmr/ciao,matthewrsj/ciao,chavafg/ciao,tpepper/ciao,obedmr/ciao,leoswaldo/ciao,matthewrsj/ciao,erick0z/ciao,tpepper/ciao,markdryan/ciao