RFC 2137: Support defining C-compatible variadic functions in Rust

Author: aturon

text/0000-variadic.md renamed to text/2137-variadic.md

@@ -1,7 +1,7 @@
 - Feature Name: variadic
 - Start Date: 2017-08-21
-- RFC PR: (leave this empty)
-- Rust Issue: (leave this empty)
+- RFC PR: https://github.com/rust-lang/rfcs/pull/2137
+- Rust Issue: https://github.com/rust-lang/rust/issues/44930
 
 # Summary
 [summary]: #summary