std: Demode uv::global_loop

Author: brson

src/libstd/uv_global_loop.rs

@@ -1,5 +1,8 @@
 //! A process-wide libuv event loop for library use.
 
+#[forbid(deprecated_mode)];
+#[forbid(deprecated_pattern)];
+
 export get;
 
 use ll = uv_ll;