Code style fixes

* splitting up and genericizing some code, localizing default-dependent stuff in one file

* make cooling lava an API as well

* split out spring code, start roughing in mineclone support

* ooh, at some point altitude checking was added to ABM definitions. Awesome.

* fix crash in flow through

* adding mapgen spring clay. Mineclone2 and Mineclone5 both need to accept pull requests fixing bugs before this will work

everness.lua

@@ -0,0 +1,15 @@
+local water_probability = dynamic_liquid.config.water_probability
+
+if dynamic_liquid.config.water then
+    -- mineral water is already not renewable,
+    -- so it is not necessary to override it
+    -- local override_def = {liquid_renewable = false}
+    -- minetest.override_item("everness:mineral_water_source", override_def)
+    -- minetest.override_item("everness:mineral_water_flowing", override_def)
+
+    dynamic_liquid.liquid_abm(
+        "everness:mineral_water_source",
+        "everness:mineral_water_flowing",
+        water_probability
+    )
+end

init.lua

@@ -56,3 +56,7 @@ end
 if minetest.get_modpath("mcl_core") then
 	dofile(modpath.."/mineclone.lua")
 end
+
+if minetest.get_modpath("everness") then
+	dofile(modpath.."/everness.lua")
+end

mod.conf

@@ -1,3 +1,3 @@
 name = dynamic_liquid
-optional_depends = default, doc, xpanes, carts, mcl_core, mclx_core, mcl_mapgen_core, mcl_mapgen
+optional_depends = default, doc, xpanes, carts, mcl_core, mclx_core, mcl_mapgen_core, mcl_mapgen, everness
 description = Flowing dynamic liquids and ocean-maintenance springs.