am f28608cd: am c8d0d630: Merge "Fix issue 2909189: System property ro.audio.silent no longer mutes system." into gingerbread

Merge commit 'f28608cdf4f6a0075d0811ccd32123baf4daec31'

* commit 'f28608cdf4f6a0075d0811ccd32123baf4daec31':
  Fix issue 2909189: System property ro.audio.silent no longer mutes system.