Removing all cross borrowing is RFC 37

Author: alexcrichton

active/0000-remove-cross-borrowing-entirely.md renamed to active/0037-remove-cross-borrowing-entirely.md

@@ -1,5 +1,5 @@
 - Start Date: 2014-06-25
-- RFC PR #: (leave this empty)
+- RFC PR #: 139
 - Rust Issue #: #10504
 
 # Summary
@@ -28,4 +28,4 @@ The impact of not doing this is that the coercion will remain.
 
 None.
 
-[1]: https://github.com/rust-lang/rust/pull/15171
+[1]: https://github.com/rust-lang/rust/pull/15171