mod_image_for_recovery: log mounts and loopdevs.
mod_image_for_recovery: log mounts and loopdevs.

We have problems with loopdev leaks occasionally (see crosbug.com/16651); this
will help us figure out what we're leaking and to whom.

BUG=chromium-os:16651
TEST=build,mod_image_for_recovery

Change-Id: I12ae1fe433f54ffee0ec18bf1ce4db111b53f13d
Signed-off-by: Elly Jones <1693f95ea06ee6d7b2276cb599c3f4f33a951d9c@chromium.org>
Reviewed-on: http://gerrit.chromium.org/gerrit/10301

endocode/scripts,gtank/scripts,fivethreeo/scripts,zhang0137/scripts,andrejro/coreos--scripts,trnubo/scripts,crawford/scripts,smilart/scripts,bcwaldon/coreos-scripts,bcwaldon/coreos-scripts,gtank/scripts,marineam/coreos-scripts,mjg59/scripts,vmware/coreos-scripts,mischief/scripts,andrejro/coreos--scripts,gtank/scripts,glevand/coreos--scripts,smilart/scripts,vmware/coreos-scripts,sigma/coreos-scripts,BugRoger/scripts,crawford/scripts,mjg59/scripts,marineam/coreos-scripts,mjg59/scripts,sigma/coreos-scripts,zhang0137/scripts,BugRoger/scripts,sigma/coreos-scripts,trnubo/scripts,coreos/scripts,zhang0137/scripts,trnubo/scripts,fivethreeo/scripts,smilart/scripts,nicescale/scripts,BugRoger/scripts,endocode/scripts,andrejro/coreos--scripts,coreos/scripts,endocode/scripts,glevand/coreos--scripts,nicescale/scripts,marineam/coreos-scripts,fivethreeo/scripts,crawford/scripts,vmware/coreos-scripts,nicescale/scripts,mischief/scripts,mischief/scripts,bcwaldon/coreos-scripts