add generic types

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@6491 57a11ea4-9604-0410-9ed3-97b8803252fd

src/engine/gnc-engine.h

@@ -39,9 +39,12 @@ typedef struct gnc_commodity_s       gnc_commodity;
 typedef struct gnc_commodity_table_s gnc_commodity_table;
 
 typedef GList                  AccountList;
+typedef GList                  BookList;
 typedef GList                  SplitList;
 typedef GList                  TransList;
 
+typedef GList                  AccountGUIDList;
+typedef GList                  BookGUIDList;
 
 typedef void (* gnc_engine_init_hook_t)(int, char **);