Mono vs. Gecko packaging discrepancies

[Vincent Povirk (they/them)]

> * One uses ...<arch>-<version>... the other ...<version>-<arch>...

None of Wine Mono's build artifacts include an architecture in the
filename. Bin is not an architecture.

Technically, the msi is x86. If/when we have arm support, we'll need a
separate msi, and we may want a separate tarball as well.

Would it be too confusing to list x86 as an architecture when it
includes x86_64 files too?