Clean up and add EL-5 support
    
    - Add test suite patch to support building with Test::More < 0.88 so that we
      can build for EPEL-5, only applying the patch when necessary
    - Drop redundant versioned requirements of XXX >= 0.000
    - Drop BR: perl ≥ 1:5.6.0; even EL-3 could have satisfied that
    - BR: perl(base) and perl(Carp), which could be dual-lived
    - BR: perl(Test::Pod) for full test coverage
    - Run the release tests too
    - Don't need to remove empty directories from buildroot
    - Don't use macros for commands
    - Use DESTDIR rather than PERL_INSTALL_ROOT
    - Drop %defattr, redundant since rpm 4.4
    - Make %files list more explicit