Reset the hash statistics to 0

Property definitions

hash_debug :: hash_debug $ Sys :: clear_hash_stats
	# Reset the hash statistics to 0
	fun clear_hash_stats
	do
		gt_count = 0
		gt_coll = 0
		gt_tot_coll = 0
		gt_tot_length = 0
		gt_tot_cap = 0

		st_count = 0
		st_coll = 0
		st_tot_coll = 0
		st_tot_length = 0
		st_tot_cap = 0
	end
lib/hash_debug/hash_debug.nit:108,2--122,4