add always defined macro Q_CREATOR_RUN to cpp parser

Merge-request: 336
Reviewed-by: Erik Verbruggen <erik.verbruggen@nokia.com>

Change-Id: Iefd0c60bb3e78047e28dcff33cc62c15ed11f711
Reviewed-on: http://codereview.qt-project.org/4292
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>

src/libs/cplusplus/pp-engine.cpp

@@ -1375,9 +1375,10 @@ void Preprocessor::processIfdef(bool checkUndefined,
 
             } else if (env->isBuiltinMacro(macroName)) {
                 value = true;
+            } else if (macroName == "Q_CREATOR_RUN") {
+                value = true;
             }
 
-
             if (checkUndefined)
                 value = ! value;