[commit: base] type-nats's head updated: Merge remote-tracking branch 'origin/master' into type-nats (a360b6b)

[Iavor Diatchki]

Repository : ssh://darcs.haskell.org//srv/darcs/packages/base

Branch 'type-nats' now includes:

     9ab1f46... change unsafeDupableInterleaveIO from INLINE to NOINLINE (#5943)
     ebcb55d... add test for #5943
     a360b6b... Merge remote-tracking branch 'origin/master' into type-nats