libs: merge librustrt into libstd

This commit merges the `rustrt` crate into `std`, undoing part of the
facade. This merger continues the paring down of the runtime system.

Code relying on the public API of `rustrt` will break; some of this API
is now available through `std::rt`, but is likely to change and/or be
removed very soon.

[breaking-change]

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libstd/thread_local/mod.rs b/src/libstd/thread_local/mod.rs
index 1268ab8e0cf..b78428d69de 100644
--- a/src/libstd/thread_local/mod.rs
+++ b/src/libstd/thread_local/mod.rs
@@ -446,7 +446,7 @@ mod tests {
     use prelude::*;
 
     use cell::UnsafeCell;
-    use rustrt::thread::Thread;
+    use rt::thread::Thread;
 
     struct Foo(Sender<()>);