Update to 0.19
    
    - New upstream release 0.19:
      - Test::CPAN::Changes now accepts version entries ending in '-TRIAL'
        (CPAN RT#76882)
      - releases() in CPAN::Changes also accepts entries ending in '-TRIAL'
    - Don't need to remove empty directories from buildroot
    - Drop %defattr, redundant since rpm 4.4