[glibmm/gmmproc-refactor] Update TODO.

[Krzesimir Nowak <krnowak src gnome org>]

commit 7f90fd5f415fdb5f29042e6a1965c061d2714962
Author: Krzesimir Nowak <qdlacz gmail com>
Date:   Thu Jun 14 00:54:47 2012 +0200

    Update TODO.

 tools/pm/TODO |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/tools/pm/TODO b/tools/pm/TODO
index 6b67ac3..2680b58 100644
--- a/tools/pm/TODO
+++ b/tools/pm/TODO
@@ -249,6 +249,10 @@
 - Look where default parameters, output ones and optional ones
   need to be supported. (_WRAP_CTOR, _WRAP_CREATE and so on.)
 
+- Support for optional and output parameters should be done
+  via parameters passed after passing C++ prototype and C
+  function name.
+
 - git grep -n 'TODO' tools/pm
 
 - Cleanup this TODO. :-)