Revert "XXX Make application less interactive for debugging"

This reverts commit fdd15d41d8c7995639754213558772e49a25f176.
Make PlistPartition.toString more readable
UDIFBlock: simplify output

Replace internal details with externally relevant facts (such as the
effective offsets, not the fields they are computed from).
XXX Generate mapping table for device-mapper on output

Generate, for .dmg files with only simple block types, a table for
Linux's device-mapper, which allows to create a block device
representing the whole disk and backed by the .dmg file, without
physically copying the content of the block device away.