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/texinfo-6.7/import-gnulib.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+../gnulib-b81ec69/gnulib-tool --import \
+    --lib=libgnu \
+    --source-base=gnulib/lib \
+    --m4-base=gnulib/m4 \
+    --doc-base=doc \
+    --tests-base=tests \
+    --aux-dir=build-aux \
+    --conditional-dependencies \
+    --no-libtool \
+    --macro-prefix=gl \
+    --no-vc-files \
+    argz \
+    getopt-gnu \
+    gettext-h \
+    iconv \
+    mbchar \
+    mbiter \
+    mbscasecmp \
+    mbschr \
+    mbslen \
+    mbsncasecmp \
+    mbsstr \
+    mbswidth \
+    memrchr \
+    regex \
+    stdarg \
+    strcasestr \
+    strdup-posix \
+    strerror \
+    vasprintf \
+    xalloc

steps/texinfo-6.7/pass1.sh

@@ -0,0 +1,15 @@
+# SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    find . -name '*.mo' -delete
+    find . -name '*.gmo' -delete
+
+    ../../import-gnulib.sh
+    autoreconf -fi
+}
+
+src_configure() {
+    ./configure --prefix="${PREFIX}"
+}

steps/texinfo-6.7/sources

@@ -0,0 +1,2 @@
+https://mirrors.kernel.org/gnu/texinfo/texinfo-6.7.tar.xz 988403c1542d15ad044600b909997ba3079b10e03224c61188117f3676b02caa
+https://git.savannah.gnu.org/cgit/gnulib.git/snapshot/gnulib-b81ec69.tar.gz 1aeea67b7b3883ebcf2b90bc01f4182d7de073a052dabd3749f20c5aa4ad3e27