Comment 24 for bug 607961

I thought I was done and was preparing an MP, but no: we do not generate the WADL on the central box before we push out. This means that the ETag scheme I had planned won't work. The obvious fix is to check in the WADL, which will be a win for building new branches, and we are already generating wadl in test runs so we can use that sunk cost to also check that the WADL that is checked in is the same as what would be generated.