Comment 8 for bug 1200800

Just an update to this issue ... Spent some time last night/this morning talking to Avishay about this bug and got agreement that there is something that needs to be fixed. His suggestion, to keep the impact to a minimum, is to add a configuration option like 'raw_images_only' to indicate systems like PowerPC where we need to skip qemu-img.

I am going to try putting together a patch based on this approach.