New files and folders for traits

Moved common enums to common

src/librustc_codegen_llvm/abi.rs

@@ -19,7 +19,7 @@ use type_::Type;
 use type_of::{LayoutLlvmExt, PointerKind};
 use value::Value;
 
-use traits::BuilderMethods;
+use interfaces::BuilderMethods;
 
 use rustc_target::abi::{HasDataLayout, LayoutOf, Size, TyLayout, Abi as LayoutAbi};
 use rustc::ty::{self, Ty};