Allow some lints to let the ported run-pass/borrowck tests get through.

src/test/ui/run-pass/borrowck/borrowck-macro-interaction-issue-6304.rs

@@ -9,6 +9,8 @@
 // except according to those terms.
 
 // run-pass
+#![allow(unconditional_recursion)]
+
 // Check that we do not ICE when compiling this
 // macro, which reuses the expression `$id`
 

src/test/ui/run-pass/borrowck/borrowck-univariant-enum.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 // run-pass
+#![allow(non_camel_case_types)]
 
 use std::cell::Cell;