swap constant usage to constant() calls #7530

Job	Run time
Parse.ly: 3.1 filter_enabled	7m 9s
Parse.ly: 3.1 filter_disabled	6m 55s
Parse.ly: 3.1 option_enabled	7m 10s
Parse.ly: 3.1 option_disabled	7m 6s
Parse.ly: 3.1 filter_and_option_enabled	6m 51s
Parse.ly: 3.1 filter_and_option_disabled	7m 7s
Parse.ly: filter_enabled	7m 2s
Parse.ly: filter_disabled	6m 55s
Parse.ly: option_enabled	7m 5s
Parse.ly: option_disabled	7m 1s
Parse.ly: filter_and_option_enabled	7m 8s
Parse.ly: filter_and_option_disabled	7m 21s
	1h 24m 50s

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