Use the new debug_level() macro in print_match_list()
Use the new debug_level() macro in print_match_list()

Also change the debug verbosity to 9, so this high-volume output will
not get printed in normal debug levels.

ampli/link-grammar,ampli/link-grammar,opencog/link-grammar,MadBomber/link-grammar,linas/link-grammar,MadBomber/link-grammar,ampli/link-grammar,MadBomber/link-grammar,ampli/link-grammar,linas/link-grammar,ampli/link-grammar,ampli/link-grammar,opencog/link-grammar,ampli/link-grammar,linas/link-grammar,opencog/link-grammar,MadBomber/link-grammar,MadBomber/link-grammar,linas/link-grammar,ampli/link-grammar,MadBomber/link-grammar,opencog/link-grammar,opencog/link-grammar,linas/link-grammar,MadBomber/link-grammar,opencog/link-grammar,linas/link-grammar,opencog/link-grammar,opencog/link-grammar,opencog/link-grammar,ampli/link-grammar,linas/link-grammar,MadBomber/link-grammar,linas/link-grammar,linas/link-grammar