rustc: Move ast, ast_util, visit to rustsyntax

src/librustsyntax/rustsyntax.rc

@@ -4,4 +4,9 @@
 
 #[crate_type = "lib"];
 
+use std;
+
 mod codemap;
+mod ast;
+mod ast_util;
+mod visit;

src/rustc/rustc.rc

@@ -70,11 +70,7 @@ mod middle {
 
 
 mod syntax {
-    mod ast;
-    mod ast_util;
-
     mod fold;
-    mod visit;
     mod parse {
         mod lexer;
         mod parser;

src/rustc/syntax.rs

@@ -2,6 +2,15 @@
 import rustsyntax::codemap;
 export codemap;
 
+import rustsyntax::ast;
+export ast;
+
+import rustsyntax::ast_util;
+export ast_util;
+
+import rustsyntax::visit;
+export visit;
+
 export ast;
 export ast_util;
 export visit;