[wix-users] Export from MSI

[Steven Penny]

If I get this file:

https://static.rust-lang.org/dist/rust-1.48.0-x86_64-pc-windows-gnu.msi

I try to extract like this:

~~~
dark -v -x . rust-1.48.0-x86_64-pc-windows-gnu.msi
~~~

but I just get a bunch of files like this:

~~~
fil0A0E0313BD2399519BAED65874B4E760
~~~