qt4: fixed search field compilation for Mac and s/Carbon/Cocoa

Note that Carbon code isn't supported in 64bit applications...

modules/gui/qt4/util/searchlineedit.hpp

@@ -27,10 +27,9 @@
 #ifndef _SEARCHLINEEDIT_H_
 #define _SEARCHLINEEDIT_H_
 
+#import "../qt4.hpp"
 #include <QLineEdit>
 
-#include <qt4.hpp>
-
 #if HAS_QT47
 class ClickLineEdit : public QLineEdit
 {

modules/gui/qt4/util/searchlineedit_mac.mm

@@ -29,11 +29,11 @@
 **
 ****************************************************************************/
 
-#include "util/searchlineedit.hpp"
+#include "searchlineedit.hpp"
 
 #ifdef Q_WS_MAC
 
-#include <Carbon/Carbon.h>
+#include <Cocoa/Cocoa.h>
 
 //![0]
 SearchLineEdit::SearchLineEdit(QWidget *parent)