Fix fatal error when compiling with gcc4.3 (stdlib.h missing)

git-svn-id: http://root.cern.ch/svn/root/trunk@23407 27541ba8-7e3a-0410-8455-c3a389f83636

gui/qtgsi/src/TQRootApplication.cxx

@@ -12,6 +12,7 @@
 
 #include "TQRootApplication.h"
 #include "TSystem.h"
+#include <stdlib.h>
 
 bool TQRootApplication::fgDebug=kFALSE;
 bool TQRootApplication::fgWarning=kFALSE;

gui/qtgsi/src/TQRootDialog.cxx

@@ -9,6 +9,7 @@
  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
  *************************************************************************/
 
+#include <stdlib.h>
 #include "qevent.h"
 #include "qdialog.h"
 #include "qpushbutton.h"