Remove GenericChan/Port from prelude#4867

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z0w0 wants to merge 2 commits intorust-lang:incomingfrom

z0w0:pruneprelude

Commits on Feb 10, 2013

core: Remove GenericChan/Port from prelude. Closes #4762
z0w0
committed

Commits on Feb 11, 2013

core: Fix files that needed GenericChan/Port from prelude
z0w0
committed