Update to 0.63
    
    - New upstream release 0.63
      - Make '' and undef not equal
      - Made Data::Dumper minimum version 2.126 to resolve CPAN RT#60798
      - Allow an option to override Sortkeys in C<eq_or_diff>
      - Unnumbered tests; there's no point to them
      - Document the Text::Diff unicode fix
      - Add ability to customize 'Got' and 'Expected' column headers
      - Minor doco-fixes
      - Remove use of flatten, always use Data::Dumper for saner, more readable
        output (CPAN RT#95446)
    - This release by DCANTRELL → update source URL
    - Drop %defattr, redundant since rpm 4.4
    - Use %{_fixperms} macro rather than our own chmod incantation
    - Don't need to remove empty directories from the buildroot