eventually use events for QCoreApplication

[aoloe]

For now, we don't have an event loop, but if we ever need it (dbus? scripter?) here are some pointers:

• http://stackoverflow.com/questions/4180394/how-do-i-create-a-simple-qt-console-application-in-c
• http://www.lubby.org/ebooks/qtconsoleapp2/qtconsoleapp2.html
• http://jimloco.com/2011/02/18/writing-a-console-application-with-qt/
• http://www.qtcentre.org/threads/9678-CLI-and-QCoreApplication-where-to-start
• http://files.itslearning.com/data/764/2405/qt4/ch14lev1sec1.html