4055fed1e7
All helper client code now uses xcb, so calling XSetAuthorization() is no longer needed. This is the last reference to libX11 from helper clients, so linking with x11-xcb and libX11 is no longer required. Also drop (unneeded?) linking with libXau. Also drop installing these prerequistes on AppvVeyor. Also move prototypes for functions in winauth.c from win.h into a new header, winauth.h, and include that where needed.
X Server
The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into.
Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the following article: https://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the Xorg mailing list:
https://lists.freedesktop.org/mailman/listinfo/xorg
The master development code repository can be found at:
https://gitlab.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
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