[DPP-58] Remove dependency on Template Haskell

[qnikst]

[Imported from JIRA. Reported by Tim Watson [Administrator] @hyperthunk) as DPP-58 on 2013-01-18 13:53:39]
It is entirely possible to install distributed-process without requiring Template Haskell. We should not therefore, IMO, force consumers of d-p-platform to use Template Haskell if they wish not to.

This is quite easy to do for the most part, although we will need to un-template the uses of mkClosure and remotable in Call.hs first.