Bugzilla Bug 224723

(Thanks for fixing #224649)

My nvidia card is too recent to use xvmc so my USE flag for this is -xvmc:

[ebuild   R   ] media-tv/mythtv-0.21_p17435  USE="aac alsa dvb dvd fftw jack
lirc mmx opengl perl python x264 xvid (-altivec) -autostart -debug -directv
-ieee1394 -lcd -xvmc" VIDEO_CARDS="nvidia" 0 kB

However, in upgrading to this version I was prompted (because
/etc/X11/XvMCConfig doesn't exist - there's no need for it) to run 'eselect
xvmc list', etc, as though xvmc was set:

if use xvmc && [ ! -f /etc/X11/XvMCConfig ] || \
        [ -z `cat /etc/X11/XvMCConfig` ]; then
ewarn
        ewarn "No XvMC implementation has been selected yet"
        ewarn "Use 'eselect xvmc list' for a list of available choices"
        ewarn "Then use 'eselect xvmc set <choice>' to choose"
        ewarn "'eselect xvmc set nvidia' for example"
    fi

which is inconsistent in my case.

Further, there doesn't currently seem to be an xvmc module for eselect anyway.

Thanks.

Reproducible: Always

Steps to Reproduce:
1.Upgrade (?re-emerge) to media-tv/mythtv-0.21_p17435
2.
3.

Actual Results:  
Build emerges fine but post-install instructions are inconsistent with xvmc USE
flag not being set.

Expected Results:  
Absence of xvmc USE flag shoule be properly recognised.

fixed.