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/memory.rs

@@ -332,3 +332,10 @@ impl Drop for Memory {
         self.unmap(true);
     }
 }
+
+#[derive(Debug)]
+pub struct Tls {
+    pub master: VirtualAddress,
+    pub file_size: usize,
+    pub mem: Memory
+}