osx: tricked OS X once again to run Eternity on Snow Leopard. For simplicity's sake, now there's a single OS X upload that's designed for 10.6+, which sure enough includes the libc++ and libc++abi files. Cannot verify if it works on OS X 10.5- or 10.7-8 because of lack of computers, but should work on 10.7-8.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2813 86ba831e-150c-0410-ab35-e06eaae15ed9
Updated some remaining files to GPLv3 :|

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2814 86ba831e-150c-0410-ab35-e06eaae15ed9