Add widestring manager in uses.

packages/fv/examples/testuapp.pas

@@ -4,6 +4,7 @@ program testuapp;
 {$h-}
 
 uses
+  {$ifdef UNIX}fpwidestring,{$endif}
   Objects, UDrivers, UViews, UMenus, UDialogs, UApp, UMsgBox, UInpLong, UTabs, SysUtils;
 
 const