* This patch adds multiscreen support to Xephyr. For instance,
the command line : "Xephyr :4 -ac -screen 320x240 -screen 640x480"
will launch with two "screens" - namely two main windows.
The first main window represents a screen that has the number :4.0, with
a geometry of 320x240 pixels, and the second one represents a screen
that has the number :4.1 with a geometry of 640x480.
The command line: "DISPLAY=:4.1 xclock" will launch the xclock program
on the second screen, for intance.
* this patch was edited by Dodji Seketeli <dodji@openedhand.com> for:
- better style compliance with the rest of the Xephyr code
- make sure Xephyr could be launched with no -screen option. By
default that creates a default screen of 640x480 pixel like before
- display full titles on the windows - with insctructions to grab
keyboard and mouse - like before.
Move the bell into an OS function, and use that if it's declared; else,
fall back to using the driver's function.
Remove the Linux keyboard bell function; just move it into the OS layer.
Use named initialisers when converting the old structures, and eliminate
unused functions.
