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.

sysc/guile-3.0.9/import-gnulib.sh

@@ -1,129 +0,0 @@
-#!/bin/sh
-
-# SPDX-FileCopyrightText: 2023 fosslinux <fosslinux@aussies.space>
-#
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-../gnulib-356a414e/gnulib-tool --import --local-dir=gnulib-local \
-    --lib=libgnu \
-    --source-base=lib \
-    --m4-base=m4 \
-    --doc-base=doc \
-    --tests-base=tests \
-    --aux-dir=build-aux \
-    --lgpl=3 \
-    --conditional-dependencies \
-    --libtool \
-    --macro-prefix=gl \
-    --no-vc-files \
-    --avoid=lock \
-    --avoid=unistr/base \
-    --avoid=unistr/u8-mbtouc \
-    --avoid=unistr/u8-mbtouc-unsafe \
-    --avoid=unistr/u8-mbtoucr \
-    --avoid=unistr/u8-prev \
-    --avoid=unistr/u8-uctomb \
-    --avoid=unitypes \
-    accept4 \
-    alignof \
-    alloca-opt \
-    announce-gen \
-    autobuild \
-    bind \
-    byteswap \
-    c-strcase \
-    canonicalize-lgpl \
-    ceil \
-    clock-time \
-    close \
-    connect \
-    copysign \
-    dirfd \
-    dirname-lgpl \
-    duplocale \
-    environ \
-    extensions \
-    flexmember \
-    flock \
-    floor \
-    fpieee \
-    frexp \
-    fstat \
-    fsync \
-    full-read \
-    full-write \
-    func \
-    gendocs \
-    getaddrinfo \
-    gethostname \
-    getlogin \
-    getpeername \
-    getsockname \
-    getsockopt \
-    git-version-gen \
-    gitlog-to-changelog \
-    gnu-web-doc-update \
-    gnupload \
-    havelib \
-    iconv_open-utf \
-    inet_ntop \
-    inet_pton \
-    isfinite \
-    isinf \
-    isnan \
-    ldexp \
-    lib-symbol-versions \
-    lib-symbol-visibility \
-    libunistring \
-    link \
-    listen \
-    localcharset \
-    locale \
-    log1p \
-    lstat \
-    maintainer-makefile \
-    malloc-gnu \
-    malloca \
-    mkdir \
-    mkostemp \
-    nl_langinfo \
-    nproc \
-    nstrftime \
-    open \
-    pipe-posix \
-    pipe2 \
-    poll \
-    posix_spawn \
-    posix_spawn_file_actions_addclose \
-    posix_spawn_file_actions_adddup2 \
-    posix_spawn_file_actions_addopen \
-    posix_spawn_file_actions_init \
-    posix_spawnp \
-    putenv \
-    readlink \
-    recv \
-    recvfrom \
-    regex \
-    rename \
-    rmdir \
-    select \
-    send \
-    sendto \
-    setenv \
-    setsockopt \
-    shutdown \
-    socket \
-    stat-time \
-    stdlib \
-    striconveh \
-    string \
-    sys_select \
-    sys_stat \
-    time \
-    times \
-    trunc \
-    unistd \
-    verify \
-    vsnprintf \
-    warnings \
-    wchar