New Moose 0.50 and Class::MOP 0.60

Moose,

Today I uploaded Class::MOP 0.59 and 0.60, and Moose 0.49 and 0.50.
PAUSE failed to index some of Class::MOP because of version numbers it
made up. Bumping the version and re-uploading didn't fix it. Hopefully
it all works out. If not, well, we'll definitely have the new CMOP and
Moose on CPAN before YAPC. :)

As with the past few releases, this version features decent speedups.
Most were ferreted out by stevan. Some of the changes that made us
faster: not inlining a destructor if the user doesn't define one,
caching the instance metaclasses where possible, using ref over
reftype, and improving the API of *_package_symbol so that it can be
made faster. Thanks stevan!

Moose,
Shawn M Moore