`Install` now functions completely agnostically
`-M` works

- Thanks for wonderful abstraction, `-M` now works.
- `-x` and `-k` also work out of the box!
- `Bash.Parser` also now shuts up about unused return results
  in `do` blocks.
Merge remote-tracking branch 'upstream/abs' into abs

Conflicts:
	Aura/Commands/A.hs
	Aura/Commands/M.hs
	Aura/Core.hs
	Aura/Dependencies.hs
	Aura/Install.hs
	Aura/Packages/ABS.hs