Fix MacOS build

Bump elixir_make, now uses gmake on NetBSD platform

I use MacPorts and need to tell the build to look in /opt/local/

Also:

- Adds `GenMagic.Server.recycle` and `GenMagic.Server.reload` which
allows to restart/reload the apprentice server with a new set of
databases,
- Fix compilation on musl based distributions (was caused by the args
code),
- Handle timeouts better in `GenMagic.Server`
- Force the port to close in recycling if the graceful stop timeouts