Add test

From-SVN: r127884

gcc/testsuite/gnat.dg/requeue1.adb

+--  { dg-do run }
+
+with Ada.Text_Io; use Ada.Text_Io;
+        
+procedure requeue1 is
+
+  protected P is
+    entry Requeue_Without_Abort;
+    entry Queue_Without;
+    procedure Open;
+  private
+    Opened: Boolean := False;
+  end P;
+ 
+  protected body P is
+    entry Requeue_Without_Abort when True is
+    begin
+      -- BUG: after this requeue no time out of the call should be possible
+      requeue Queue_Without;
+    end Requeue_Without_Abort;
+
+    entry Queue_Without when Opened is
+    begin
+      Opened := False;
+    end Queue_Without;
+
+    procedure Open is
+    begin
+      Opened := True;
+    end Open;
+  end P;
+
+  -- Test of timed entry call to an entry with requeue without abort
+  task T_Without;
+  task body T_Without is
+  begin
+    select
+      P.Requeue_Without_Abort;
+    or
+      delay 1.0;
+      Put_Line("failed");
+    end select;
+
+  exception
+    when others => Put_Line ("failed");
+  end T_Without;
+
+begin
+  delay 3.0;
+  P.Open;
+end;