[Usability] Button ordering

[Owen Taylor <otaylor redhat com>]

I've just applied Gregory Merchan's patch in:

 http://bugzilla.gnome.org/show_bug.cgi?id=56331

To make the GTK+ standard dialogs button ordering conform to the gnome
usability project's dialog proposal.

 http://developer.gnome.org/projects/gup/proposals/dialog.html

This is Mac style with the "action" button at the lower right
hand corner, as opposed to what we've done in the past - Windows style
with the default button at the left.

So, 

  [ Help ]                 [ Cancel ] [   OK   ]

Not:

  [ Help ]                 [   OK   ] [ Cancel ]

While I'm willing to be told that this is the better ordering (the
fact that Windows and Mac disagree probably mean that there is no
"right" ordering), I have two reservations about the change:

 * Familiarity is important; I'm feeling quite disoriented by
   the change and other of our users will probably be disoriented
   too, both existing GNOME users and users coming from Windows.

 * With this change we'll have inconsistency in all apps until
   they are fixed.

Anyways, since I'm sure this change is going to cause controversy I
thought I might as well start the flame war myself to save time ;-)

Regards,
                                        Owen