Add Option::owned

Author: WaffleLapkin

library/alloc/src/lib.rs

@@ -230,6 +230,7 @@ pub mod collections;
 #[cfg(all(not(no_rc), not(no_sync), not(no_global_oom_handling)))]
 pub mod ffi;
 pub mod fmt;
+pub mod option;
 #[cfg(not(no_rc))]
 pub mod rc;
 pub mod slice;