reNX: Store NodeData* instead of actual data to avoid duplicating data in memory.

Signed-off-by: angelsl <hidingfromhidden@gmail.com>
reNX: Use structure dereference operator. NXNode is now safe

@retep998

Signed-off-by: angelsl <hidingfromhidden@gmail.com>
reNX: Formatting

Signed-off-by: angelsl <hidingfromhidden@gmail.com>
reNX: Update license text. Please take note of changes to license!

Signed-off-by: angelsl <hidingfromhidden@gmail.com>