- PERL_INSTALL_ROOT => DESTDIR
    - add perl_default_subpackage_tests, and drop t/ from doc
    - add perl_default_filter (and update filtering)
    - auto-update to 0.22 (by cpan-spec-update 0.01)
    - altered br on perl(ExtUtils::MakeMaker) (0 => 6.42)
    - added a new br on perl(Scalar::Util) (version 1.10)
    - altered br on perl(Test::More) (0 => 0.47)
    - added a new req on perl(Scalar::Util) (version 1.10)