* remember last-used maildir, and use it as default for next run

src/mu-index.h

@@ -64,6 +64,17 @@ MuIndex* mu_index_new (const char* muhome, guint batchsize, GError **err)
 void mu_index_destroy (MuIndex *index);
 
 
+/**
+ * get the maildir for the last run of indexing for the
+ * current database
+ * 
+ * @param index MuIndex object
+ * 
+ * @return the last used maildir, or NULL
+ */
+const char* mu_index_last_used_maildir (MuIndex *index);
+
+
 /**
  * callback function for mu_index_(run|stats|cleanup), for each message
  *