* refactor copying and freeing of node->storage by handlerizing them.
- freestoragefunc
- copystoragefunc
- node_util.c/h have generic handlers for these.
- removed all UI .h include stuff! (Not allowed outside of src/)
- Makefile had typo error, compilation failed
Now it survives make, but it does not enter the two the subdirectories for
shader and compo nodes. So a linking gives unrecovered stuff in the end.
How does that work? I need help!