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/autogen-5.18.16/pass1.sh

@@ -0,0 +1,68 @@
+# SPDX-FileCopyrightText: 2022 Andrius Štikonas <andrius@stikonas.eu>
+# SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+noextract="autogen-5.18.16.tar.xz"
+
+src_prepare() {
+    mkdir build
+    mv ../autogen-5.18.16 build/src
+    mv ../autogen-5.18.16.tar.xz build/
+    rm -f build/src/add-on/char-mapper/cm.tar
+}
+
+src_compile() {
+(
+    set -e
+    declare -x PKG_CONFIG_PATH="${LIBDIR}/pkgconfig"
+    sed -i "s/make install/make install DESTDIR=\${DESTDIR}/" bootstrap_tarball.sh
+    sed -i "/make check/d" bootstrap_tarball.sh
+    declare -x FINALPREFIX="${PREFIX}"
+    declare -x GUILE_STATIC="--static"
+    declare -x GNULIBDIR="${PWD}"/../gnulib-8f4538a5
+    declare -x MAN_PAGE_DATE=1970-01-01
+
+    SKIP_MAIN=1 . ./bootstrap_tarball.sh
+    prepare_tarball
+    bootstrap_columns
+    bootstrap_getdefs
+    bootstrap_autogen
+    bootstrap_tpl_config
+
+    # Build stage2 autogen (stage1 autogen is not easy to install into /usr)
+    rm -R build/tarball
+    cp -ar build/autogen-5.18.16 build/tarball
+    cd build/tarball
+
+    # These files does not respect MAN_PAGE_DATE
+    sed -i "s/+%Y/+1970/; s/%m/01/; s/%d'/01'/; s/%Y/2018/" autoopts/aoconf.tpl
+    sed -i 's/%Y/2018/' autoopts/options_h.tpl
+
+    SOURCE_DIR="$PWD" ./config/bootstrap
+    # Specify timeout to avoid non-reproducibility
+    CPPFLAGS=-D_LARGEFILE64_SOURCE=1 ./configure \
+	--prefix="${FINALPREFIX}" \
+	--libdir="${FINALPREFIX}/lib/i386-unknown-linux-musl" \
+	--disable-shared \
+	--enable-timeout=15
+    touch doc/agdoc.texi # build later
+    make -j1 CFLAGS=-Wno-error
+
+    # Fix non-reproducible man-page
+    awk '{gsub("\\(/tmp/.*", "", $7); print}' agen5/autogen.1 > autogen.1
+    mv autogen.1 agen5/autogen.1
+
+    cd ../..
+)
+}
+
+src_install() {
+    cd build/tarball
+    make DESTDIR="${DESTDIR}" install MAN_PAGE_DATE=1970-01-01
+
+    # Some reproducibility issues and generally not useful for bootstrapping
+    rm "${DESTDIR}${PREFIX}/share/autogen/libopts-"*.tar.gz
+
+    cd ../..
+}