If some library dependencies are missing, compilation can fail hence
one may prefer to compile modules individually.

They just prove to be a problem for some people, and it is not like
I care much about this code.

Happy new year.

All the files of this project have now top-comment blocks more uniform.
Copyright dates and names have been updated as well.

For details about this project and better format.

This will facilitate project maintenance, as well as future contributions.
The project is under PostgreSQL license either way...

hello_signal can be used to understand how to handle signals in a custom
bgworker.