pinto add/pull - warn about skipped dependencies when doing pull/add to pinto

[melezhik]

Hi Jeff! Have not spoken for a awhile, have not we ((: ? Glad to back to pinto stuff ((:

My proposal i to add information about skipped dependencies which pinto is not going to to pull/add when doing recursive add/pull for given distribution:

   $ cat MyApp/Build.PL
       "Parse::CPAN::Meta" => "0"

  # will silently skip some modules, e.g.  "Parse::CPAN::Meta" :

   $ pinto add MyApp.tar.gz -v 
   ....

  # but if pull Parse::CPAN::Meta manually I'll see the that Parse::CPAN::Meta indeed has not been added :
  $ pull Parse::CPAN::Meta
      ... Skipping Parse::CPAN::Meta~0: included in perl 5.014002 core