When loading libqgispython failed, output to logger the reason from Q…

…Library.

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@10076 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/app/qgisapp.cpp

@@ -4195,7 +4195,7 @@ void QgisApp::loadPythonSupport()
   else
   {
     //using stderr on purpose because we want end users to see this [TS]
-    QgsDebugMsg( "Couldn't load Python support library." );
+    QgsDebugMsg( "Couldn't load Python support library: " + pythonlib.errorString() );
   }
 
   if ( mPythonUtils && mPythonUtils->isEnabled() )