QtOptionsPage: Don't build qml helpers for 4.8

They're not required any more.

Change-Id: If55d835600ea0ddf6b6b54f8fdd88e2025fc17be
Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/qtsupport/qmldebugginglibrary.cpp

@@ -73,6 +73,11 @@ bool QmlDebuggingLibrary::canBuild(const BaseQtVersion *qtVersion, QString *reas
             *reason = QCoreApplication::translate("Qt4ProjectManager::QmlDebuggingLibrary", "Only available for Qt 4.7.1 or newer.");
         return false;
     }
+    if (qtVersion->qtVersion() >= QtVersionNumber(4, 8, 0)) {
+        if (reason)
+            *reason = QCoreApplication::translate("Qt4ProjectManager::QmlDebuggingLibrary", "Not needed.");
+        return false;
+    }
     return true;
 }
 

src/plugins/qtsupport/qmldumptool.cpp

@@ -209,6 +209,12 @@ bool QmlDumpTool::canBuild(const BaseQtVersion *qtVersion, QString *reason)
             *reason = QCoreApplication::translate("Qt4ProjectManager::QmlDumpTool", "Only available for Qt 4.7.1 or newer.");
         return false;
     }
+    if (qtVersion->qtVersion() >= QtVersionNumber(4, 8, 0)) {
+        if (reason)
+            *reason = QCoreApplication::translate("Qt4ProjectManager::QmlDumpTool", "Not needed.");
+        return false;
+    }
+
 
     if (!hasPrivateHeaders(installHeaders)) {
         if (reason)

src/plugins/qtsupport/qmlobservertool.cpp

@@ -68,6 +68,11 @@ bool QmlObserverTool::canBuild(const BaseQtVersion *qtVersion, QString *reason)
             *reason = QCoreApplication::translate("Qt4ProjectManager::QmlObserverTool", "Only available for Qt 4.7.1 or newer.");
         return false;
     }
+    if (qtVersion->qtVersion() >= QtVersionNumber(4, 8, 0)) {
+        if (reason)
+            *reason = QCoreApplication::translate("Qt4ProjectManager::QmlObserverTool", "Not needed.");
+        return false;
+    }
     return true;
 }