daemon: fstrim: When debugging, capture and print fstrim -v output.
daemon: fstrim: Fix fstrim so it trims the correct filesystem.

We didn't call sysroot_path, so it was trimming the appliance instead
of the guest filesystem.
launch: libvirt: Move the is_kvm flag (derived from libvirt capabilities) to backend data struct.

This is just rearranging the data between structs.  There should be no
functional change.
sparsify: Remove unused variable definition.
sparsify: Capture any exceptions and display nicer error messages.

This is just code motion, there is no functional change.
sparsify: Remove unused 'open' directive.
sparsify: Move command line parsing code to separate file.

This is just code motion.
sparsify: Refactor command line parsing to pass back a mode.

This is just code motion, but sets the ground-work for adding a second
mode (in-place image modification).
sparsify: Move copying-mode code to a separate file.

This is just code motion.