SmartOS/live e6105b5tools build_iso

OS-6073 build USB image in /tmp
Reviewed by: Robert Mustacchi <rm at joyent.com>
Reviewed by: Joshua M. Clulow <jmc at joyent.com>
Approved by: Robert Mustacchi <rm at joyent.com>
DeltaFile
+37-16tools/build_iso
+37-161 files

UnifiedSplitRaw