Remove ability to use ghc-binary

There have been a couple of cases recently where people have been using the ghc-binary package. We should either:

• ship binary instead. Then people can legitimately use it, and as a bonus, as GHC moves to using binary the Binary instances for GHC's types will become available
• Add something to GHC to allow us to really hide packages, so people can't use it

We'll have to make some sort of decision about hoopl, too.

Trac metadata

Trac field	Value
Version	7.0.2
Type	Bug
TypeOfFailure	OtherFailure
Priority	high
Resolution	Unresolved
Component	Compiler
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