intermittent check in to merge.  added deduction queries to location,
product and attribute networks.  Test for productnetwork deduction.
Merge remote-tracking branch 'origin/master'
Merge branch 'master' of https://github.com/Hellblazer/Ultrastructure.git
Merge branch 'master' of https://github.com/Hellblazer/Ultrastructure.git
passes.  fix inference spelling