QRegExp include cleanup

This patch adds the missing include statements for QRegExp.

Change-Id: Ibb03b929940adb84ae190b5090cb6b88653cc14c
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/qmlprojectmanager/fileformat/filefilteritems.cpp

@@ -32,6 +32,7 @@
 #include <QDebug>
 #include <QDir>
 #include <QImageReader>
+#include <QRegExp>
 
 namespace QmlProjectManager {
 

src/plugins/qmlprojectmanager/fileformat/filefilteritems.h

@@ -28,6 +28,7 @@
 #include "qmlprojectitem.h"
 
 #include <QObject>
+#include <QRegExp>
 #include <QSet>
 #include <QTimer>
 

src/plugins/qmlprojectmanager/qmlproject.cpp

@@ -44,6 +44,7 @@
 #include <qtsupport/qtsupportconstants.h>
 
 #include <QDebug>
+#include <QRegExp>
 
 using namespace Core;
 using namespace ProjectExplorer;