From b0de38eafe7fe897f907066dc1ef923073690d5d Mon Sep 17 00:00:00 2001
From: login
Date: Sun, 17 Oct 2021 16:25:53 +0000
Subject: pcoin_keys fixed

Thanks to ~jmjl, I was able to find that pcoin_keys didn't work. To fix it, tcoin uses sneaky magic but with stdin isntead of an argument, and a new library imported called popen2, that lets me send both stdin and receive stdout, to successfully get "ls <path to the pcoin_keys directory>" to work (it execl's another instance of the tcoin comand so that it runs under setuid instead of as the original user who ran it.
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