Support for update callbacks in python defined RNA properties as discussed last meeting.

This means script authors can perform actions using these callbacks rather then on drawing which puts blender in a readonly state.

Simple example:

import bpy
def up_func(self, context):
    print("test")

bpy.types.Scene.testprop = bpy.props.FloatProperty(update=up_func)
bpy.context.scene.testprop = 11

# prints -> test

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_define.c b/source/blender/makesrna/intern/rna_define.c
index 66d1036ec44..8e9c7e287d6 100644
--- a/source/blender/makesrna/intern/rna_define.c
+++ b/source/blender/makesrna/intern/rna_define.c
@@ -1839,6 +1839,11 @@ void RNA_def_property_update(PropertyRNA *prop, int noteflag, const char *func)
 	prop->update= (UpdateFunc)func;
 }
 
+void RNA_def_property_update_runtime(PropertyRNA *prop, void *func)
+{
+	prop->update= func;
+}
+
 void RNA_def_property_dynamic_array_funcs(PropertyRNA *prop, const char *getlength)
 {
 	if(!DefRNA.preprocess) {
@@ -2057,6 +2062,11 @@ void RNA_def_property_srna(PropertyRNA *prop, const char *type)
 	prop->srna= (StructRNA*)type;
 }
 
+void RNA_def_py_data(PropertyRNA *prop, void *py_data)
+{
+	prop->py_data= py_data;
+}
+
 /* Compact definitions */
 
 PropertyRNA *RNA_def_boolean(StructOrFunctionRNA *cont_, const char *identifier, int default_value, const char *ui_name, const char *ui_description)
@@ -2822,6 +2832,7 @@ void RNA_def_property_free_pointers(PropertyRNA *prop)
 		if(prop->identifier) MEM_freeN((void*)prop->identifier);
 		if(prop->name) MEM_freeN((void*)prop->name);
 		if(prop->description) MEM_freeN((void*)prop->description);
+		if(prop->py_data) MEM_freeN(prop->py_data);
 
 		switch(prop->type) {
 			case PROP_BOOLEAN: {