make these modules optional

scripts/eressea/autoseed.lua

@@ -1,3 +1,4 @@
+if not config.autoseed then return nil end
 local autoseed = {}
 
 -- minimum required resources in the 7-hex neighborhood:

scripts/eressea/embassy.lua

@@ -1,8 +1,5 @@
 -- Muschelplateau
 
-local embassy = {}
-local home = nil
-
 -- global exports (use item)
 function use_seashell(u, amount)
 -- Muschelplateau...
@@ -17,6 +14,11 @@ function use_seashell(u, amount)
     return -4
 end
 
+if not config.embassy then return nil end
+
+local embassy = {}
+local home = nil
+
 function embassy.init()
     home = get_region(165,30)
     if home==nil then

scripts/eressea/eternath.lua

@@ -1,5 +1,5 @@
 -- DEPRECATED
-
+if not config.eternath then return nil end
 -- implements parts of a quest in E2
 -- this module is deprecated, because it puts functions in the global environment for at_building_action
 

scripts/eressea/ponnuki.lua

@@ -1,3 +1,4 @@
+if not config.ponnuki then return nil end
 local ponnuki = {}
 
 local directions = { "NW", "NO", "O", "SO", "SW", "W" }

scripts/eressea/wedding.lua

@@ -1,4 +1,5 @@
 -- DEPRECATED
+if not config.wedding then return nil end
 
 -- this script contains the action functions for the two portals
 -- used on the jadee/wildente wedding island. the two _action functions

scripts/eressea/xmas.lua

@@ -1,3 +1,5 @@
+if not config.xmas then return nil end
+
 local gifts = {
     e2 = {
         { year = 2015, turn = 959, item = 'snowglobe', msg='santa_f' },