Update to 2.38
    
    - New upstream release 2.38
      - Added methods to the generated objects to try to retrieve dist contents
        from a local cpan mirror
      - Some refactoring/cleanup
      - Added rudimentary logic to return the subs in a package, as well as verify
        via regex whether a given sub is in the package
      - Moved author tests to xt/ to avoid them being run on the user side
      - Removed some dependency on hash ordering in the tests
    - Classify buildreqs by usage
    - Don't use macros for commands
    - Don't need to remove empty directories from the buildroot
    - Use DESTDIR rather than PERL_INSTALL_ROOT
    - Drop EL-5 support as dependencies can't be met there
    - Make %files list more explicit
    - Patch out Test::InDistDir dependency, only needed to support upstream's IDE