Name: query_quests - get quest information from a player

Syntax:
	string query_quests()
	int    query_quests(string quest)

Description:
	The query_short call gets the quest status from a player.

Return value:
	Syntax 1: returns a string containing all quests solved by the
	          player, separated by '#'.

	Syntex 2: returns 1, if the player has solved the given quest, else 0.

Examples:
	string quests;
	int solved;
	quests=this_player()->query_quests();
	solved=this_player()->query_quests("magic_path");

See also: player/set_quest