Make server command issue threadpoool/threadpool.h

[MrAsimZahid]

I am having this issue when I write "make server" command.

[Twenkid]

Yes, with git clone ... the folder is empty.
I download it with by:

cd webserver
git clone https://github.com/pminkov/threadpool

The prints in cgi-bin also have to be updated (assuming we're using python3 now).
I just made pull requests with these changes and updated them in my branch. :)