CMake hacks for MCST e2k (Elbrus 2000) architecture

Слиты xottab-duty запросил слияние github/fork/r-a-sattarov/dev в dev

Created by: r-a-sattarov

  • luajit.cmake: added hack for MCST version of LuaJIT
  • xrGame/CMakeLists: added hack for MCST lcc compiler