* update "provides" section of MooseX::Types::DateTime::MoreCoercions on cpanfile.snapshot to include a version number instead of "undef"; installation of a direct Media Cloud dependency Net::Amazon::S3 fails otherwise
* manually install Module::Install in the update_modules_with_carton.sh script too (just like in install_modules_with_carton.sh); use Perlbrew's "cpanm" for doing that because otherwise the system strings (e.g. "x86_64-linux-thread-multi") get mixed up on some Ubuntu systems