Add MapSettingsManager and new mapgen setting script API functions

This commit refactors the majority of the Mapgen settings system.
- MapgenParams is now owned by MapSettingsManager, itself a part of ServerMap,
  instead of the EmergeManager.
- New Script API functions added:
    core.get_mapgen_setting
    core.get_mapgen_setting_noiseparams,
    core.set_mapgen_setting, and
    core.set_mapgen_setting_noiseparams.
- minetest.get/set_mapgen_params are deprecated by the above new functions.
- It is now possible to view and modify any arbitrary mapgen setting from a mod,
  rather than the base MapgenParams structure.
- MapgenSpecificParams has been removed.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mapgen_singlenode.h b/src/mapgen_singlenode.h
index 58672a0ed..07520134d 100644
--- a/src/mapgen_singlenode.h
+++ b/src/mapgen_singlenode.h
@@ -22,7 +22,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 
 #include "mapgen.h"
 
-struct MapgenSinglenodeParams : public MapgenSpecificParams {
+struct MapgenSinglenodeParams : public MapgenParams {
 	MapgenSinglenodeParams() {}
 	~MapgenSinglenodeParams() {}