Mass Bug Filing: Missing Build-Depends: graphviz

[Santiago Vila <sanvila@unex.es>]

Greetings.

There seems to be more than ten packages which:

* Have doxygen in Build-Depends.
* Do not have graphviz in Build-Depends.
* Try to run "dot" during the build.
* The build does not fail because doxygen keeps working as if
  nothing bad happened, violating Policy 4.6.
  (This is already reported as Bug #818379).

I intend to report every such package that I find as having a missing
"Build-Depends: graphviz".

As soon as Bug #818379 is fixed, those bugs would be FTBFS,
so I'm going to report this as "severity: important", i.e. just
a step below "serious".

I'm still in doubt about severity of #818379. It makes a lot of
packages to violate Policy 4.6. Is this enough to be RC?

Thanks.