Tiny improvements for e2k (MCST Elbrus 2000)

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

Created by: r-a-sattarov

  • src/xrCore/xr_cpuid.cpp: added check of 3DNow for e2k
  • src/xrGame/CMakeLists.txt: added additional message for debug case on e2k