[java] support --java-lib <directory>

src/context/nativeLibraryHandler.ml

@@ -24,8 +24,17 @@ let add_native_lib com file is_extern = match com.platform with
 	| Globals.Flash ->
 		SwfLoader.add_swf_lib com file is_extern
 	| Globals.Java ->
-		let std = file = "lib/hxjava-std.jar" in
-		Java.add_java_lib com file std is_extern
+		let add file =
+			let std = file = "lib/hxjava-std.jar" in
+			Java.add_java_lib com file std is_extern
+		in
+		if try Sys.is_directory file with Sys_error _ -> false then
+			let dir = file in
+			(fun _ -> Array.iter (fun file ->
+				if ExtString.String.ends_with file ".jar" then add (dir ^ "/" ^ file) ()
+			) (Sys.readdir file))
+		else
+			add file
 	| Globals.Cs ->
 		let file, is_std = match ExtString.String.nsplit file "@" with
 			| [file] ->