structure: Move the files around to a new structure

We intend to execute scripts from the source directory. To make
this work we make this directory follow the installed structure.
portability: /bin/bash might not exist on some systems

On *BSD bash is not installed by default. Use the /usr/bin/env
to find a copy of bash.
configure: Generate final scripts and parse --prefix

Create .in files and a configure script to patch the files and
paths. We are not using autoconf/m4 or such to generate the file
but a simple sed that should work on BSD and GNU systems.
misc: Share the code to resolve/create the PIDFILE path
start-image: We know where to find bootstrap.st do it that way
misc: Create a working example with the launch.d with symlinks

The README will be included and compiled so just specify it
as a Smalltalk comment.
install: Fix prefix, add sysconfdir, generate Makefile for install

For installing the package we generate a Makefile that honors
the DESTDIR variable and can now build proper packages.
debian: Create a minimal debian package