Removed in Perl is misleading. Those modules just moved to CPAN and are not deprecated.
threads are now ithreads since multiplicity.
Accepted in Perl 5.8.0 XXX
-=item -Dusemultiplicity -Dusethreads
+=item -Dusemultiplicity -Duseithreads
Introduced in Perl 5.6.0
=item Test::Harness::Straps
-Removed in Perl 5.10.1
+Moved from Perl 5.10.1 to CPAN
=item perlcc
Introduced in Perl 5.005
-Removed in Perl 5.9.0
+Moved from Perl 5.9.0 to CPAN
=item C<our> can now have an experimental optional attribute C<unique>