RC2 release imminent

[Kazu Yamamoto (=?iso-2022-jp?B?GyRCOzNLXE9CSScbKEI=?=)]

Hi Austin,

> The RC2 source distribution is here:
> 
> http://www.haskell.org/ghc/dist/7.8.1-rc2/

To my quick test, the @rpath problem on Mac has been fixed.
Thank you!

--Kazu