add missing defines to QtSupport ProductModule and rely on their presence

Change-Id: I21b14aa75928f35d35853f6d93e8bd58a653153b
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>

src/plugins/qt4projectmanager/qt4projectmanager.qbs

@@ -17,12 +17,6 @@ QtcPlugin {
     Depends { name: "QmlJSTools" }
 
     Depends { name: "cpp" }
-    cpp.defines: base.concat([
-        "PROPARSER_AS_LIBRARY",
-        "PROPARSER_THREAD_SAFE",
-        "PROEVALUATOR_THREAD_SAFE",
-        "PROEVALUATOR_CUMULATIVE"
-    ])
     cpp.includePaths: base.concat([
         "customwidgetwizard",
         "../../shared",

src/plugins/qtsupport/qtsupport.qbs

@@ -108,6 +108,8 @@ QtcPlugin {
         cpp.includePaths: "../../shared"
         cpp.defines: [
             "QMAKE_AS_LIBRARY",
+            "PROPARSER_THREAD_SAFE",
+            "PROEVALUATOR_CUMULATIVE",
             "PROEVALUATOR_THREAD_SAFE",
             "QMAKE_BUILTIN_PRFS",
             "PROEVALUATOR_SETENV"