rfbsrc dependency on libX11 automagic

Submitted by Gilles Dartiguelongue

Link to original bug (#709530)

Description

I haven't noticed this before but it looks like rfbsrc and eglglessink both depend on libX11 optionally.

The issue is that the dependency is automagic [1] and it makes a "dependency-less" plugin (rfbsrc) not so dependency-less according to build environment.

I would propose a patch but it looks like something already provides --with-x and I cannot figure out where it comes from yet.

[1] http://www.gentoo.org/proj/en/qa/automagic.xml

Version: 1.2.0