fix alignment for chan_handle structs; rust equiv is translated

to char[16], not struct{long,long}

src/lib/task.rs

@@ -80,7 +80,7 @@ native mod rustrt {
 
 type rust_task =
     {id: task,
-     mutable notify_enabled: u32,
+     mutable notify_enabled: int,
      mutable notify_chan: comm::chan<task_notification>,
      mutable stack_ptr: *u8};
 
@@ -318,7 +318,7 @@ fn unsafe_spawn_inner(-thunk: fn@(),
     // set up notifications if they are enabled.
     alt notify {
       some(c) {
-        (**task_ptr).notify_enabled = 1u32;;
+        (**task_ptr).notify_enabled = 1;
         (**task_ptr).notify_chan = c;
       }
       none { }

src/rt/rust_task.h

@@ -44,7 +44,7 @@ struct frame_glue_fns {
 // library. This struct must agree with the std::task::rust_task record.
 struct rust_task_user {
     rust_task_id id;
-    uint32_t notify_enabled;   // this is way more bits than necessary, but it
+    intptr_t notify_enabled;   // this is way more bits than necessary, but it
                                // simplifies the alignment.
     chan_handle notify_chan;
     uintptr_t rust_sp;         // Saved sp when not running.