[Request dependency]Restructure dependencies to allow for 32bit support

[Dungeonseeker]

One thing currently absent from bottles is 32bit dependency support and before it can be tackled there needs to be some way of differentiating between 32b and 64b dependencies.

There's 2 ways this can be achieved, either

1. add a flag to existing deps (something like "Arch x86 and Arch x86_64) then have both downloads listed in the same yaml

or

2. have a separate yaml per arch, one for X86 and one for X86_64.

Based purely on how existing yamls are laid out I would say separate yamls per arch would be easier to implement.

Thoughts?

Edit - other considerations

Bottles will need a flag added to differentiate between different arches, 32b Bottles should only install 32b deps, 64b Bottles should install both 32b and 64b.