libX11 and Xau functions

[Matthieu Herrb]

Hi,

In the old monolithic days, libX11 used to include a subset of libXau 
and libXdmcp, wich made it more or less self-contained.
In the modularization process these parts where dropped (without 
changing the library's major revision). This is causing minor but 
annoying troubles with some legacy applications that don't use 
pkg-config to find out which libs to link to X applications.

Was this change  intentional, or is it just an oversight that should be 
fixed?

-- 
Matthieu Herrb