rusti's crate type is 'lib'

Author: brson

src/librusti/rusti.rc

@@ -5,7 +5,7 @@
        uuid = "7fb5bf52-7d45-4fee-8325-5ad3311149fc",
        url = "https://github.com/mozilla/rust/tree/master/src/rusti")];
 
-#[crate_type = "bin"];
+#[crate_type = "lib"];
 
 #[no_core];