Improvements to feature staging

This gets rid of the 'experimental' level, removes the non-staged_api
case (i.e. stability levels for out-of-tree crates), and lets the
staged_api attributes use 'unstable' and 'deprecated' lints.

This makes the transition period to the full feature staging design
a bit nicer.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/rand/mod.rs b/src/libstd/rand/mod.rs
index 3fa1efe1ccd..60d490982db 100644
--- a/src/libstd/rand/mod.rs
+++ b/src/libstd/rand/mod.rs
@@ -219,7 +219,7 @@
 //! }
 //! ```
 
-#![experimental]
+#![unstable]
 
 use cell::RefCell;
 use clone::Clone;