=ID Properties Update=

This commit adds file reading/writing of ID properties to all ID types, 
and also adds python access for NMesh, Mesh, Scene and Image.  Note 
that the file reading code might need some more work for certain 
future/planned features to save right.  Also I updated a few comments in idprop.c.

source/blender/python/api2_2x/NMesh.c

@@ -73,6 +73,7 @@
 #include "Object.h"
 #include "Key.h"
 #include "Mathutils.h"
+#include "IDProp.h"
 #include "constant.h"
 #include "gen_utils.h"
 
@@ -1718,6 +1719,9 @@ static PyObject *NMesh_getattr( PyObject * self, char *name )
 	if( strcmp( name, "name" ) == 0 )
 		return EXPP_incr_ret( me->name );
 
+	else if ( strcmp( name, "properties" ) == 0 )
+		return BPy_Wrap_IDProperty( (ID*)me->mesh, IDP_GetProperties((ID*)me->mesh, 1) );
+
 	else if( strcmp( name, "mode" ) == 0 )
 		return PyInt_FromLong( me->mode );