mkexp: changed merge of process environment ('DEFAULT' section) to be sorted

CHANGES.txt

@@ -14,6 +14,7 @@ Global
 
 * Added creation of config dump to mkexp (including backup)
 * Changed mkexp namelist formatting to add multi-group identifiers as comment
+* Changed merge of process environment ('DEFAULT' section) to be sorted
 
 Release 1.0.0
 =============

expconfig.py

@@ -341,7 +341,9 @@ class ExpConfig(ConfigObj):
             # Mask literal dollar characters
             for key, value in env_dict.iteritems():
                 env_dict[key] = value.replace('$', '$$')
-        pre_config.merge({'DEFAULT': env_dict})
+        pre_config.merge({'DEFAULT': {}})
+        for key, value in sorted(env_dict.iteritems()):
+            pre_config['DEFAULT'][key] = value
 
         # Read experiment settings from library (default and type specific)