[Bf-funboard] first modifier

[franco cortesi]

hi! i'm trying to write a modifier by following this doc:
http://wiki.blender.org/index.php/Dev:Source/Modifiers/Adding
but can't get it working:
D:\7D\Rendering\Sources\Blender\trunk\blendervdb\source\blender\makesrna\intern\rna_modifier.c(227) : error C2065: 'RNA_ParticleMeshModifier' : undeclared identifier

line 226:		case eModifierType_ParticleMesh:line 227:			return &RNA_ParticleMeshModifier;

still checking where could be the problem but i can't found it. the patch includes some dependecies (15mb) but i can submit it if needed.