This directory contains a drop-in 64bit McStas code generator for 
McStas 2.3 on Windows systems.

This is normally not necessary, but is a solution for the problem 
reported here:
https://github.com/McStasMcXtrace/McCode/issues/318

Installation:
Unpack the tgz and place the bin/mcstas.exe in your c:\McStas-2.3\bin folder