Remove the notion of "sys*"

- This idea originates from very early in the project and was, at the
  time, a very easy way to categorise things.
- Now, it doesn't really make much sense - it is fairly arbitary, often
  occuring when there is a change in kernel, but not from builder-hex0
  to fiwix, and sysb is in reality completely unnecessary.
- In short, the sys* stuff is a bit of a mess that makes the project
  more difficult to understand.
- This puts everything down into one folder and has a manifest file that
  is used to generate the build scripts on the fly rather than using
  coded scripts.
- This is created in the "seed" stage.

stage0-posix -- (calls) --> seed -- (generates) --> main steps

Alongside this change there are a variety of other smaller fixups to the
general structure of the live-bootstrap rootfs.

- Creating a rootfs has become much simpler and is defined as code in
  go.sh. The new structure, for an about-to-be booted system, is

/
-- /steps (direct copy of steps/)
-- /distfiles (direct copy of distfiles/)
-- all files from seed/*
-- all files from seed/stage0-posix/*

- There is no longer such a thing as /usr/include/musl, this didn't
  really make any sense, as musl is the final libc used. Rather, to
  separate musl and mes, we have /usr/include/mes, which is much easier
  to work with.
- This also makes mes easier to blow away later.
- A few things that weren't properly in packages have been changed;
  checksum-transcriber, simple-patch, kexec-fiwix have all been given
  fully qualified package names.
- Highly breaking change, scripts now exist in their package directory
  but NOT WITH THE packagename.sh. Rather, they use pass1.sh, pass2.sh,
  etc. This avoids manual definition of passes.
  - Ditto with patches; default directory is patches, but then any patch
    series specific to a pass are named patches-passX.

steps/bison-3.4.2/import-gnulib.sh

@@ -0,0 +1,91 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+../gnulib-672663a/gnulib-tool --import --local-dir=gl \
+    --lib=libbison \
+    --source-base=lib \
+    --m4-base=m4 \
+    --po-base=gnulib-po \
+    --doc-base=doc \
+    --tests-base=tests \
+    --aux-dir=build-aux \
+    --makefile-name=gnulib.mk \
+    --conditional-dependencies \
+    --no-libtool \
+    --macro-prefix=gl \
+    --po-domain=bison \
+    argmatch \
+    array-list \
+    assert \
+    assure \
+    bitsetv \
+    c-strcase \
+    calloc-posix \
+    close \
+    closeout \
+    config-h \
+    configmake \
+    dirname \
+    error \
+    extensions \
+    fdl \
+    fopen-safer \
+    fprintf-posix \
+    getopt-gnu \
+    gettext-h \
+    git-version-gen \
+    gitlog-to-changelog \
+    gpl-3.0 \
+    inttypes \
+    isnan \
+    javacomp-script \
+    javaexec-script \
+    ldexpl \
+    libtextstyle-optional \
+    mbswidth \
+    non-recursive-gnulib-prefix-hack \
+    obstack \
+    obstack-printf \
+    perror \
+    printf-posix \
+    progname \
+    quote \
+    quotearg \
+    readme-release \
+    realloc-posix \
+    relocatable-prog \
+    relocatable-script \
+    rename \
+    snprintf-posix \
+    spawn-pipe \
+    sprintf-posix \
+    stdbool \
+    stpcpy \
+    strdup-posix \
+    strerror \
+    strverscmp \
+    timevar \
+    unistd \
+    unistd-safer \
+    unlink \
+    unlocked-io \
+    unsetenv \
+    update-copyright \
+    verify \
+    vsnprintf-posix \
+    vsprintf-posix \
+    warnings \
+    xalloc \
+    xalloc-die \
+    xconcat-filename \
+    xhash \
+    xlist \
+    xmemdup0 \
+    xstrndup
+
+../gnulib-672663a/build-aux/prefix-gnulib-mk \
+    --lib-name=libbison \
+    lib/gnulib.mk