This is now fixed in r62949.

I don't quite understood why this had the priority "high" - it just
worked fine the way it was - you just have to manually rename the result
file.

In any case, I'd appreciate if the file name scheme stays as-is unless a
change is mutually agreed upon.

As for setting snapshot to 0: absolutely no. This is the privilege of
whoever builds the official releases. Even somebody checking out a
release tag should not automatically build a release version of the MSI,
as it would then be questionable which of them is the official one (they
would use the same product code). Setting snapshot to 0 is a privilege
of the release engineer.