Bug#875955: cme check dpkg warns on amd64 about unknown Build-Depends: libcam-dev [kfreebsd-any]

[Dominique Dumont]

Note to self:

May be I could add a check in cme so that madison is used (online debian 
server) to check package that are not known in the cache. (the arch 
restriction on the dependency is a good hint to search elsewhere than in the 
cache).