ww: implement package initialization

selfhost/cmd/wwdump/main.ww

@@ -148,7 +148,8 @@ export fn main(argc: i32, argv: **u8) i32 = {
 		// silently). Mirrors w6c main.ww:162 / cmd/w6c/main.c.
 		if (l.errs > 0 || ps.errs > 0) { return 1; };
 		let empty: str;
-		if (wcc.compilefile(f, 0, 0, empty, empty, 0, empty, 0) != 0) { return 1; };
+		if (wcc.compilefile(f, 0, 0, empty, empty, 0, -1, 0, 0,
+		    empty, empty) != 0) { return 1; };
 	};};};};
 
 	if (l.errs > 0) { return 1; };