buildhistory_analysis: avoid noise due to reordering

buildhistory_analysis: avoid noise due to reordering

Avoid noise in the output due to reordering of list variables (except
for PACKAGES where we just report that the order changed). Recent
changes to the buildhistory class itself will avoid this reordering
from occurring but this allows us to examine the results before and
after those changes.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>