change python3 PATH

[dingiso]

I have built fuzzware in the newest ubuntu with python3.10, but the version fuzzware required is 3.9 because of angr. It's annoying to downgrade the python version

I think the most convenient solution is using pyenv to install the specific version of python3 but the absolute path in fuzzware shell scripts block this way.

So I think so far, before adapt the newer version of angr, the abs path should be fixed

And I also add one check in the shell script because unzip is used for AFL to extract the files

I have tried this fix and I am sure that it works fine in ubuntu 22.04.02

[Scepticz]

Have you tried this with the docker install and everything? I have somewhat limited capacity for testing at the moment

[dingiso]

Ok I will tried for docker