Update to 2.4.5 and freshen. Turns out this port has been outdated for
months, but it wasn't being picked up because they stuck a 'v' before
the version for.... reasons I'm sure.

• Remove the pkg-message advising installing MRO::Compat, which is a no-op on perl > 5.9.5
• Add stuff to TEST_DEPENDS to enable the full test suite
• Add NO_ARCH
• Strip the library
• Rewrite pkg-descr with the currently-used text, which is clearer
• While there, update WWW to metacpan