core: Fix files that needed GenericChan/Port from prelude

src/libcore/private.rs

@@ -14,7 +14,7 @@ use cast;
 use iter;
 use libc;
 use option;
-use pipes;
+use pipes::{GenericChan, GenericPort};
 use prelude::*;
 use ptr;
 use result;

src/libcore/private/weak_task.rs

@@ -22,7 +22,8 @@ use option::{Some, None, swap_unwrap};
 use private::at_exit::at_exit;
 use private::global::global_data_clone_create;
 use private::finally::Finally;
-use pipes::{Port, Chan, SharedChan, GenericSmartChan, stream};
+use pipes::{Port, Chan, SharedChan, GenericChan, GenericPort,
+            GenericSmartChan, stream};
 use task::{Task, task, spawn};
 use task::rt::{task_id, get_task_id};
 use hashmap::linear::LinearMap;

src/libcore/run.rs

@@ -14,7 +14,7 @@ use io;
 use io::ReaderUtil;
 use libc;
 use libc::{pid_t, c_void, c_int};
-use pipes::{stream, SharedChan};
+use pipes::{stream, SharedChan, GenericChan, GenericPort};
 use option::{Some, None};
 use os;
 use prelude::*;