ENH: add qWarning about MANTIS-743

Code/Common/Core/mvdI18nCoreApplication.cxx

@@ -482,6 +482,9 @@ I18nCoreApplication
   if (!homeDir.exists())
     SystemError( ToStdString( QString( "('%1')" ).arg( homeDir.path() ) ) );
 
+  if (homeDir.dirName() == I18nCoreApplication::DEFAULT_CACHE_DIR_NAME )
+	  qWarning() << tr("The selected directory seems to be an previous mvd2 directory, nevertheless we will create a new mvd2 repository into the selected directory.") ;
+
   //
   // Create cache-dir.
   bool isNew = I18nCoreApplication::MakeDirTree(

Code/Common/Gui/mvdI18nMainWindow.cxx

@@ -306,6 +306,8 @@ I18nMainWindow
   // Setup initial empty database
   if( isNew )
     DatabaseConnection::InitializeDatabase();
+  else
+    qWarning()<<tr("The selected directory already contain a mvd2 directory, no new database will be created"); 
 }
 
 /*****************************************************************************/