rollup merge of #18398 : aturon/lint-conventions-2

Conflicts:
	src/libcollections/slice.rs
	src/libcore/failure.rs
	src/libsyntax/parse/token.rs
	src/test/debuginfo/basic-types-mut-globals.rs
	src/test/debuginfo/simple-struct.rs
	src/test/debuginfo/trait-pointers.rs

src/libstd/io/process.rs

@@ -11,7 +11,7 @@
 //! Bindings for executing child processes
 
 #![allow(experimental)]
-#![allow(non_uppercase_statics)]
+#![allow(non_upper_case_globals)]
 
 use prelude::*;