Do not include utils.h in xcbutils.h

Only needed for ScopedCPointer which can be defined in both utils and
xcbutils.h.

Not having utils.h in xcbutils.h makes it easier to have unit tests use
xcbutils.h as it removes the dependencies.

screenedge.h

@@ -41,6 +41,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 namespace KWin {
 
+class Client;
 class ScreenEdges;
 
 class Edge : public QObject

tabbox/tabboxhandler.cpp

@@ -20,6 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 // own
 #include "tabboxhandler.h"
+#include <config-kwin.h>
 #include <kwinglobals.h>
 #include "xcbutils.h"
 // tabbox

xcbutils.cpp

@@ -19,7 +19,6 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 #include "xcbutils.h"
-#include "utils.h"
 // Qt
 #include <QDebug>
 // xcb

xcbutils.h

@@ -21,10 +21,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define KWIN_XCB_UTILS_H
 
 #include <kwinglobals.h>
-#include "utils.h"
 
 #include <QRect>
 #include <QRegion>
+#include <QScopedPointer>
 #include <QVector>
 
 #include <xcb/xcb.h>
@@ -35,6 +35,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 namespace KWin {
 
+template <typename T> using ScopedCPointer = QScopedPointer<T, QScopedPointerPodDeleter>;
+
 namespace Xcb {
 
 typedef xcb_window_t WindowId;