Working 64-bit renamed Windows installer

More hyphens to underscores for WiX

Remove refs to docs/README.txt

Change package name to use underscores

Change # signs to use underscores as identifiers

Change cabinet to use underscores. Try changing format string

Update version num in Make.bat

Remove msi modifier

Fix modify_msi.vbs

Update MakeX64.bat

s/-/_/g in modify_msi.vbs

Change verison numbers in Make.bat and MakeX64.bat

Document changes to the vbs