Log exit status of hivexml
Adjust usage notes
Guard xmllint check on Fiwalk output
Use absolute path to disk image

-o was encountering some issues after changing directory.
Abandon rdifference adaptation
Log errors from hive extraction
Add tally column for failed-hive cells
Abstract out a path
Document; expand environment variables check
Rewrite INSTALL
Revise README
Update deps distribution list
Add autotool checks to build script
Bump .py versions to staging versions
Use upstream DFXML library with integrated RE changes
Add another CentOS build workaround