Memory Error with latest resource file

Using the latest firware, v1.1.5.56, the resource file contains possibly too many resources? I'm not very familiar with python so maybe I'm missing something.

After making a change to allow the newer header NERES mentioned in #52, I get the following output when trying to run res2img.py -d -u -i chaohu_v69.res:

file is a Haumi resource file
version 69
number of resources: 4294967295
Traceback (most recent call last):
  File "./tools/res2img.py", line 387, in <module>
    extract_list = range(max_rsrc)
MemoryError

Python version is 2.7.15+ and linux 64bit.

Any ideas?

I'm guessing there isn't enough memory for this much larger number of resources and we might need to break up the list into chunks.

Or perhaps I need to do more than just check for both header strings as in #60.