Fix Error Message (although build logic was correct already): Running Linux does not automatically mean that X11 is missing
Fix Error Message (although build logic was correct already): Running Linux does not automatically mean that X11 is missing

miranov25/AliRoot,ALICEHLT/AliRoot,shahor02/AliRoot,alisw/AliRoot,shahor02/AliRoot,coppedis/AliRoot,shahor02/AliRoot,miranov25/AliRoot,alisw/AliRoot,alisw/AliRoot,miranov25/AliRoot,shahor02/AliRoot,miranov25/AliRoot,coppedis/AliRoot,ALICEHLT/AliRoot,alisw/AliRoot,miranov25/AliRoot,alisw/AliRoot,alisw/AliRoot,shahor02/AliRoot,miranov25/AliRoot,ALICEHLT/AliRoot,coppedis/AliRoot,ALICEHLT/AliRoot,coppedis/AliRoot,coppedis/AliRoot,alisw/AliRoot,coppedis/AliRoot,shahor02/AliRoot,alisw/AliRoot,miranov25/AliRoot,coppedis/AliRoot,coppedis/AliRoot,ALICEHLT/AliRoot,ALICEHLT/AliRoot,miranov25/AliRoot,ALICEHLT/AliRoot,shahor02/AliRoot