Track mount client, send mount/unmount signals
Track mount client, send mount/unmount signals

Original git commit by Alexander Larsson <alex@greebo.(none)> at 1170173576 +0100

svn path=/trunk/; revision=289

xkahn/gvfs-cmis,xkahn/gvfs-cmis,cpatulea/gvfs,philipl/gvfs,xkahn/gvfs-cmis,gicmo/gvfs,gicmo/gvfs,philipl/gvfs,cpatulea/gvfs,halfline/gvfs,gicmo/gvfs,gicmo/gvfs,thiblahute/gvfs,halfline/gvfs,philipl/gvfs,thiblahute/gvfs,xkahn/gvfs-cmis,halfline/gvfs