resolve: Include stdlib prelude into name lookup in macro namespace
resolve: Include stdlib prelude into name lookup in macro namespace

This is going to be used when built-in macros are defined through libcore and made available to other crates through standard library prelude

aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust