Move scriptapi to separate folder (by sapier)

On the lua side, notably minetest.env:<function>(<args>) should now
be replaced by minetest.<function>(<args>).
The old way is and will stay supported for a long time.

Also:
Update and clean up lua_api.txt (by celeron55)
Move EnvRef to lua and remove add_rat and add_firefly (by kahrl)
Add separate src/util/CMakeLists.txt, other minor fixes (by kahrl)

src/script/lua_api/luaapi.h

@@ -0,0 +1,140 @@
+/*
+Minetest
+Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef LUAAPI_H_
+#define LUAAPI_H_
+
+
+class ModApiBasic : public ModApiBase {
+
+public:
+	ModApiBasic();
+
+	bool Initialize(lua_State* L,int top);
+
+private:
+	// debug(text)
+	// Writes a line to dstream
+	static int l_debug(lua_State *L);
+
+	// log([level,] text)
+	// Writes a line to the logger.
+	// The one-argument version logs to infostream.
+	// The two-argument version accept a log level: error, action, info, or verbose.
+	static int l_log(lua_State *L);
+
+	// request_shutdown()
+	static int l_request_shutdown(lua_State *L);
+
+	// get_server_status()
+	static int l_get_server_status(lua_State *L);
+
+	// register_biome_groups({frequencies})
+	static int l_register_biome_groups(lua_State *L);
+
+	// register_biome({lots of stuff})
+	static int l_register_biome(lua_State *L);
+
+	// setting_set(name, value)
+	static int l_setting_set(lua_State *L);
+
+	// setting_get(name)
+	static int l_setting_get(lua_State *L);
+
+	// setting_getbool(name)
+	static int l_setting_getbool(lua_State *L);
+
+	// setting_save()
+	static int l_setting_save(lua_State *L);
+
+	// chat_send_all(text)
+	static int l_chat_send_all(lua_State *L);
+
+	// chat_send_player(name, text)
+	static int l_chat_send_player(lua_State *L);
+
+	// get_player_privs(name, text)
+	static int l_get_player_privs(lua_State *L);
+
+	// get_player_ip()
+	static int l_get_player_ip(lua_State *L);
+
+	// get_ban_list()
+	static int l_get_ban_list(lua_State *L);
+
+	// get_ban_description()
+	static int l_get_ban_description(lua_State *L);
+
+	// ban_player()
+	static int l_ban_player(lua_State *L);
+
+	// unban_player_or_ip()
+	static int l_unban_player_of_ip(lua_State *L);
+
+	// show_formspec(playername,formname,formspec)
+	static int l_show_formspec(lua_State *L);
+
+	// get_dig_params(groups, tool_capabilities[, time_from_last_punch])
+	static int l_get_dig_params(lua_State *L);
+
+	// get_hit_params(groups, tool_capabilities[, time_from_last_punch])
+	static int l_get_hit_params(lua_State *L);
+
+	// get_current_modname()
+	static int l_get_current_modname(lua_State *L);
+
+	// get_modpath(modname)
+	static int l_get_modpath(lua_State *L);
+
+	// get_modnames()
+	// the returned list is sorted alphabetically for you
+	static int l_get_modnames(lua_State *L);
+
+	// get_worldpath()
+	static int l_get_worldpath(lua_State *L);
+
+	// sound_play(spec, parameters)
+	static int l_sound_play(lua_State *L);
+
+	// sound_stop(handle)
+	static int l_sound_stop(lua_State *L);
+
+	// is_singleplayer()
+	static int l_is_singleplayer(lua_State *L);
+
+	// get_password_hash(name, raw_password)
+	static int l_get_password_hash(lua_State *L);
+
+	// notify_authentication_modified(name)
+	static int l_notify_authentication_modified(lua_State *L);
+
+	// rollback_get_last_node_actor(p, range, seconds) -> actor, p, seconds
+	static int l_rollback_get_last_node_actor(lua_State *L);
+
+	// rollback_revert_actions_by(actor, seconds) -> bool, log messages
+	static int l_rollback_revert_actions_by(lua_State *L);
+
+	static int l_register_ore(lua_State *L);
+
+	static struct EnumString es_OreType[];
+};
+
+
+
+#endif /* LUAAPI_H_ */