Spec clean-up
    
    - Fix line endings of cpants_lint.pl script and documentation
    - Run the author tests too
    - BR: perl(Perl::Critic) except when bootstrapping
    - BR: perl(Test::CPAN::Meta::YAML::Version) rather than
      perl(Test::CPAN::Meta::YAML)
    - Don't BR: perl(Test::Pod::Coverage) due to presence of naked subroutines
    - Sort buildreqs for readability
    - Don't need to remove empty directories from buildroot
    - Don't use macros for commands
    - Drop %defattr, redundant since rpm 4.4
    - Make %files list more explicit