Revert prior commit until I have time to track down the valgrind error

This reverts commit 2ec3a0b.

Author: nikomatsakis

src/comp/metadata/csearch.rs

@@ -60,8 +60,7 @@ fn resolve_path(cstore: cstore::cstore, cnum: ast::crate_num,
 fn get_item_path(tcx: ty::ctxt, def: ast::def_id) -> ast_map::path {
     let cstore = tcx.sess.cstore;
     let cdata = cstore::get_crate_data(cstore, def.crate);
-    let path = decoder::get_item_path(cdata, def.node);
-    [ast_map::path_mod(cdata.name)] + path
+    ret decoder::get_item_path(cdata, def.node);
 }
 
 fn get_enum_variants(tcx: ty::ctxt, def: ast::def_id) -> [ty::variant_info] {

src/comp/middle/ast_map.rs

@@ -17,7 +17,7 @@ fn path_to_str_with_sep(p: path, sep: str) -> str {
 }
 
 fn path_to_str(p: path) -> str {
-    "::" + path_to_str_with_sep(p, "::")
+    path_to_str_with_sep(p, "::")
 }
 
 enum ast_node {