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, 2 insertions, 2 deletions

diff --git a/src/mapgen_v6.h b/src/mapgen_v6.h
index 20b0bf92e..f018ffaca 100644
--- a/src/mapgen_v6.h
+++ b/src/mapgen_v6.h
@@ -53,7 +53,7 @@ enum BiomeV6Type
 };
 
 
-struct MapgenV6Params : public MapgenSpecificParams {
+struct MapgenV6Params : public MapgenParams {
 	u32 spflags;
 	float freq_desert;
 	float freq_beach;
@@ -124,7 +124,7 @@ public:
 	content_t c_mossycobble;
 	content_t c_stair_cobble;
 
-	MapgenV6(int mapgenid, MapgenParams *params, EmergeManager *emerge);
+	MapgenV6(int mapgenid, MapgenV6Params *params, EmergeManager *emerge);
 	~MapgenV6();
 
 	virtual MapgenType getType() const { return MAPGEN_V6; }