Qt4 shouldn't require X11, even on Unix

[Alexander Neundorf]

On Monday 07 July 2008, Thiago Macieira wrote:
> This section of FindQt4.cmake seems bogus to me:
>
>   IF(UNIX)
>     # on OS X X11 may not be required
>     IF (Q_WS_X11)
>       FIND_PACKAGE(X11 REQUIRED)
>     ENDIF (Q_WS_X11)
>
> It's not necessary to have X11 headers in order to compile Qt4
> applications or KDE 4 ones. There are no X11 headers included in any
> public Qt4 application.

I just checked, a check for X11 is part of FindQt4.cmake since rev 1.1 in 
cmake cvs, almost exactly 3 years old.
Do you think it's worth changing this ?
(adds a difference to the version from cmake and might break some builds which 
accidentially use the X11 vars defined by this FIND_PACKAGE(X11) )

Alex