Have test environment setup execute in same order

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
Make mac_timelines.py into regression check

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
dfxml.py: Add iterative interface for fileobjects

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
Add timeline regression test/demonstration for iterative fileobject interface

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
Add demo program for repeating fileobject with XML Python objects

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
Have idifference.py --xml generate DFXML with differential annotations

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
Add example DFXML for differencing test

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>
Test XML output for idifference

Signed-off-by: Alex Nelson <a.nelson@prometheuscomputing.com>