[Bug 50570] Unknown Debian package and website in README

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50570

--- Comment #1 from Henri Verbeet  ---
(In reply to jkfloris from comment #0)
> From the README:
>
> Basic requirements:
>     You need to have the X11 development include files installed
>     (called xlib6g-dev in Debian and XFree86-devel in Red Hat).
>
> The xlib6g-dev package no longer exists in Debian.
> I think Wine needs the libx11-xcb-dev package.

Wine specifically needs libX11.so (among others). In current Debian (buster)
that's in libx11-dev. There's also the xorg-dev metapackage which pulls in
libx11-dev, as well as several other Xorg development packages; in some regards
the xorg-dev package may be a better choice than the libx11-dev package for the
average user.