The callback can now be invoked with either the player object or name as
the first parameter, and with either a table or a list of strings, like
this:
minetest.check_player_privs(player_name, { shout = true, fly = true })
minetest.check_player_privs(player_name, "shout", "fly")
minetest.check_player_privs(player, { shout = true, fly = true })
minetest.check_player_privs(player, "shout", "fly")
c32847838d