Smp (#23)

* Fire up multiple processors

* Use IPIs to wake up secondary processors

* Much better exception information

* Modifications to show more information on fault

* WIP: Use real libstd

* Add TLS (not complete)

* Add random function, export getpid, cleanup

* Do not spin APs until new context

* Update rust

* Update rust

* Use rd/wrfsbase

* Implement TLS

* Implement compiler builtins and update rust

* Update rust

* Back to Redox libstd

* Update rust

kernel/context/mod.rs

@@ -50,7 +50,7 @@ pub fn init() {
     context.kfx = Some(fx);
     context.status = Status::Runnable;
     context.running = true;
-    context.cpuid = Some(::cpu_id());
+    context.cpu_id = Some(::cpu_id());
     CONTEXT_ID.store(context.id, Ordering::SeqCst);
 }