[PD] Preferences Dialog

[Jonathan Wilkes]

Hi List,
     I'm going to start coding up a single preferences dialog to replace the
disparate "settings" dialogs that live in non-standard menus of Pd.

It will be "Firefox Style", meaning a "Preferences" option in the "Edit"
menu.  The dialog will have a row of buttons at the top that are icons
above text.  When a button is clicked it will bring up the tab in the dialog
window for those particular settings.  (This turns out to be surprisingly
easy to do in Tk.)


So far I think there should be an "Audio" button, "MIDI" button, and maybe
a "GUI" button that could be be split out later if needed.

I'd like to have changes take effect immediately-- otherwise it might get
confusing if one changes settings in one tab, then makes changes to another
and clicks "Apply".  How would this effect UX on Windows and OSX?

-Jonathan