TODO:

* look into the installed application directory for the ini and the roms before trying the APPDATA folder on Windows
* display the config path used as it may vary across systems and add it to the man page
* support unicode filenames on Windows (depends on libsidplayfp)
* add playlist support (pls)
* try to correctly display non-ascii credits
* add CoreAudio driver

* fix building on Cygwin
* add a switch to allow disabling building pulse support