All classes now have a cloneFull() method that will clone themselves and all their subobjects without duplication


git-svn-id: http://svn.net-core.org/repos/t-engine4@1111 51575b47-30f0-44d4-a5cc-537603b46e54

TE4 can now handle multiple versions of the same engine (or even different ones). Engines are located in game/engines and the default one in game/engines/default
Game engines can also come in archived form in a .teae zip file


git-svn-id: http://svn.net-core.org/repos/t-engine4@1110 51575b47-30f0-44d4-a5cc-537603b46e54