make ProMessageHandler connect directly to the message manager

that way the users don't have to duplicate the connect everywhere.
as a side effect, MaemoPackageContents will have error reporting now.

src/plugins/qt4projectmanager/qt4project.cpp

@@ -937,9 +937,6 @@ ProFileReader *Qt4Project::createProFileReader(Qt4ProFileNode *qt4ProFileNode)
     ++m_proFileOptionRefCnt;
 
     ProFileReader *reader = new ProFileReader(m_proFileOption);
-    connect(reader, SIGNAL(errorFound(QString)),
-            this, SLOT(proFileParseError(QString)),
-            Qt::QueuedConnection);
 
     reader->setOutputDir(qt4ProFileNode->buildDir());