The version is already checked in xenia-build. Add an actually useful 64-bit check.
This was accidentally lowered in 5d3240d492 and 3.8 has gone EOL since then.
5d3240d492
Use variable for Python version to make upgrading easier. xb.bat: Update copyright date. Add candidate paths. xb.ps1 Properly use found python executable. More consistency with .bat. Don't spew unnecessary errors, etc. EOF newline.