Use https URLs to refer to rust-lang.org where appropriate.

Also fixes a few outdated links.

src/librustc/README.md

@@ -4,7 +4,7 @@ An informal guide to reading and working on the rustc compiler.
 If you wish to expand on this document, or have a more experienced
 Rust contributor add anything else to it, please get in touch:
 
-* http://internals.rust-lang.org/
+* https://internals.rust-lang.org/
 * https://chat.mibbit.com/?server=irc.mozilla.org&channel=%23rust
 
 or file a bug:

src/librustc/lib.rs

@@ -21,9 +21,9 @@
 #![staged_api]
 #![crate_type = "dylib"]
 #![crate_type = "rlib"]
-#![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
+#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
       html_favicon_url = "https://doc.rust-lang.org/favicon.ico",
-      html_root_url = "http://doc.rust-lang.org/nightly/")]
+      html_root_url = "https://doc.rust-lang.org/nightly/")]
 
 #![feature(append)]
 #![feature(associated_consts)]