reimplement: OpenSHC::Random::RNG 100%

[gynt]

  OpenSHC::Random::RNG::setTimeBasedSeed (0x46a740) is 87.50% similar to the original
  OpenSHC::Random::RNG::populateRNG1040 (0x46a760) is 93.75% similar to the original
  OpenSHC::Random::RNG::nextRandomNumber2 (0x46a7d0) is 100.00% similar to the original
  OpenSHC::Random::RNG::nextRandomNumber1 (0x46a800) is 100.00% similar to the original
  OpenSHC::Random::RNG::Constructor_RNG (0x471810) is 100.00% similar to the original

The reimplementations for setTimeBasedSeed and populateRNG1040 are not 100% because they use lib functions that are currently set to non-reimplemented by REIMPLEMENTED_CRT.

[TheRedDaemon]

Can you also remove the other explicit non-early returns?