Update to 0.19
    
    - New upstream release 0.19
      - More Makefile.PL updates
      - Makefile.PL now checks for a working compiler using ExtUtils::HasCompiler
        (inlined into the build) rather than ExtUtils::CBuilder (CPAN RT#113685)
    - Simplify find command using -delete
    - Fix EPEL conditional - only currently buildable for EPEL 7 onwards
    - Drop BR: for Test::Pod::No404s, which breaks koji builds