Do not ignore unknown options so far

src/ejabberd_config.erl

@@ -749,8 +749,9 @@ validate_opts(#state{opts = Opts} = State) ->
 					true
 				end;
 			    _ ->
-				?ERROR_MSG("ignoring uknown option '~s'", [Opt]),
-				false
+				?ERROR_MSG("unknown option '~s' will be likely"
+					   " ignored", [Opt]),
+				true
 			end
 		end, Opts),
     State#state{opts = NewOpts}.

src/gen_mod.erl

@@ -248,9 +248,10 @@ validate_opts(Module, Opts) ->
 		      end;
 		  L when is_list(L) ->
 		      SOpts = str:join([[$', atom_to_list(A), $'] || A <- L], <<", ">>),
-		      ?ERROR_MSG("ignoring unknown option '~s' for module '~s',"
-				 " available options are: ~s", [Opt, Module, SOpts]),
-		      false;
+		      ?ERROR_MSG("unknown option '~s' for module '~s' will be"
+				 " likely ignored, available options are: ~s",
+				 [Opt, Module, SOpts]),
+		      true;
 		  {'EXIT', {undef, _}} ->
 		      ?WARNING_MSG("module '~s' doesn't export mod_opt_type/1",
 				   [Module]),