These are helper scripts for use with the ESP Package Manager (EPM).
The "ESP Package Manager (EPM)" can be found at: https://jimjag.github.io/epm/
For help type:
man mkver.pl
man patch-epm-list
Documentation can also be found at: /usr/local/share/doc/epm-helper/
Package repo: https://moria.whyayh.com/rel/released/software/ThirdParty/epm/