bindgen.adb: Update comments.

	* bindgen.adb: Update comments.

	* s-tasinf-mingw.adb: Add "with" of System.OS_Interface

From-SVN: r136007

gcc/ada/bindgen.adb

@@ -3260,14 +3260,17 @@ package body Bindgen is
       for E in Elab_Order.First .. Elab_Order.Last loop
          Get_Name_String (Units.Table (Elab_Order.Table (E)).Uname);
 
-         --  The procedure of looking for specific packages and setting
-         --  flags is somewhat dubious, but there isn't a good alternative
-         --  at the current time ???
+         --  This is not a perfect approach, but is the current protocol
+         --  between the run-time and the binder to indicate that tasking
+         --  is used: system.os_interface should always be used by any
+         --  tasking application.
 
          if Name_Buffer (1 .. 19) = "system.os_interface" then
             With_GNARL := True;
          end if;
 
+         --  Ditto for declib and the "dec" package
+
          if OpenVMS_On_Target and then Name_Buffer (1 .. 5) = "dec%s" then
             With_DECGNAT := True;
          end if;

gcc/ada/s-tasinf-mingw.adb

@@ -33,6 +33,12 @@
 
 --  This is the Windows (native) version of this module
 
+with System.OS_Interface;
+pragma Unreferenced (System.OS_Interface);
+--  System.OS_Interface is not used today, but the protocol between the
+--  run-time and the binder is that any tasking application uses
+--  System.OS_Interface, so notify the binder with this "with" clause.
+
 package body System.Task_Info is
 
    N_CPU : Natural := 0;