precheck depends before package removal; notification period

[Mark Hedges <hedges@linuxdelivery.com>]

Shouldn't there be a policy to check for packages that
depend on a package BEFORE its removal from the distribution,
and to notify maintainers ahead of time that their packages 
will break?  Such was the case with the disappearance of 
perlapi-5.6.1.  

--mark--