Made the volume widget work on Python 2.6
Made the volume widget work on Python 2.6

widget/volume.py used subprocess.check_output in get_volume to call the
amixer program. That call was introduced in Python 2.7. This changes
get_volume to use subprocess.Popen, while retaining the same semantics
(namely raising subprocess.CalledProcessError if amixer fails for some
reason).

dequis/qtile,frostidaho/qtile,kseistrup/qtile,jdowner/qtile,kopchik/qtile,encukou/qtile,frostidaho/qtile,de-vri-es/qtile,farebord/qtile,zordsdavini/qtile,StephenBarnes/qtile,himaaaatti/qtile,soulchainer/qtile,ramnes/qtile,xplv/qtile,zordsdavini/qtile,EndPointCorp/qtile,w1ndy/qtile,rxcomm/qtile,encukou/qtile,kynikos/qtile,kseistrup/qtile,kynikos/qtile,kiniou/qtile,farebord/qtile,aniruddhkanojia/qtile,apinsard/qtile,flacjacket/qtile,aniruddhkanojia/qtile,nxnfufunezn/qtile,w1ndy/qtile,apinsard/qtile,EndPointCorp/qtile,kopchik/qtile,ramnes/qtile,qtile/qtile,flacjacket/qtile,nxnfufunezn/qtile,cortesi/qtile,de-vri-es/qtile,tych0/qtile,andrewyoung1991/qtile,tych0/qtile,xplv/qtile,qtile/qtile,cortesi/qtile,soulchainer/qtile,rxcomm/qtile,dequis/qtile,kiniou/qtile,StephenBarnes/qtile,himaaaatti/qtile,jdowner/qtile,andrewyoung1991/qtile