File::Path under 2.07 has rmtree, above has remove_tree. We use the new method name
compat with Perl 5.8.8, first draft
 request modern Getopt version
 using the backwards compatible rmtree invocation
No longer need the File::Path version, since we are backwards compatible
using the orNull subroutine name
Porting back to Perl 5.8.8 regex groups. I repent for my sins.
Cleaning up leftover dev-comments.
20 is the first, we can have many so we really want group 19. Madness\? Indeed.
Merge pull request #39 from dginev/perl_5_8_8_compat

Perl 5.8.8 compat