mv std libs to library/

library/profiler_builtins/src/lib.rs

@@ -0,0 +1,11 @@
+#![no_std]
+#![feature(profiler_runtime)]
+#![profiler_runtime]
+#![unstable(
+    feature = "profiler_runtime_lib",
+    reason = "internal implementation detail of rustc right now",
+    issue = "none"
+)]
+#![allow(unused_features)]
+#![feature(nll)]
+#![feature(staged_api)]