modules : added stub for dotkit (to be verified)

lib/spack/spack/modules.py

@@ -189,8 +189,6 @@ def update_single(spec, configuration, autoloads, prerequisites, filters, env):
         pass
 
 
-
-
 class EnvModule(object):
     name = 'env_module'
     formats = {}
@@ -325,6 +323,10 @@ class Dotkit(EnvModule):
         SetEnv: 'dk_setenv {name} {value}\n'
     }
 
+    autoload_format = 'dk_op {module_file}\n'  # TODO : Check this line
+
+    prerequisite_format = None  # TODO : does something like prerequisite exist for dotkit?
+
     @property
     def file_name(self):
         return join_path(Dotkit.path, self.spec.architecture, '%s.dk' % self.use_name)