Debugger: Dont use win64interrupt.exe in some case

If everything is built with 32 bitness there is no need
to call win64interrupt.exe

Task-number: QTCREATORBUG-7891

Change-Id: I1981b0dfd0ff08ff8acce0e5b81858b00f536ded
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/procinterrupt.h

@@ -35,7 +35,8 @@
 namespace Debugger {
 namespace Internal {
 
-bool interruptProcess(int pID, int engineType, QString *errorMessage);
+bool interruptProcess(int pID, int engineType, QString *errorMessage,
+                      const bool engineExecutableIs64Bit = false);
 
 } // Internal
 } // GdbDebugger