On Windows all the license information key/value pairs are stored in a
single registry blob. The format is not properly documented, and unless
we have some apps which expect it, there should be no need to spend too
much time to figure out the internal details.

OS X doesn't really have the concept of windows being maximized; that is, being
in a mode where they can't be moved or resized.  As a consequence, it doesn't
have a button in the window title bar to restore a maximized window to normal.
So, when a Wine window is maximized, the Mac driver hijacks the green zoom
button to act as a restore button.  (When a window is zoomed, the green button
"unzooms" back to its last user size and position, so it's analogous.)

However, with OS X 10.10 (Yosemite), the green button prefers to act as a
toggle for the Cocoa full-screen mode rather than zooming and unzooming.  This
made it difficult for users to restore a maximized window.  They would have to
Option-click the green button, double-click the title bar, or choose Zoom
from the Window menu, none of which is obvious.

The fix is to disable Cocoa full-screen mode for maximized windows.  Then, the
green button reverts to unzoom and restoring the window.

winemac: When exiting Cocoa full-screen mode for a no-longer-eligible window, bypass the override of -toggleFullScreen:.

The override checks the disabled state of the window, but that's for user-
driven changes, not programmatic changes.

Move a NONAMELESSUNION directive to the one C file that needs it.