Switch epydoc to parse only

epydoc seems to be mightily confused by decorators and how they change
functions (it starts mixing the parameters of the decorated function
into the decorator itself); so we want it to parse only and not look at
the objects themselves.

Reviewed-by: ultrotter

epydoc.conf

@@ -22,3 +22,6 @@ imports: yes
 include-log: no
 
 inheritance: listed
+
+parse: yes
+introspect: no