Nasty bugs fixed

- fixed several memory leaks
- ozCore
  * Alloc
    + tracking now checks for size changes
    + race condition during statistics update fixed
  * Quat
    + some inlines -> .cc and v. v.
    + more robust fastSlerp()
- client
  * LuaJIT shouldn't be used, compiled code doesn't work, initialisation fails
    on Valgrind or sanitizers
  * fixed scheduled models clearing