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/e2fsprogs-1.45.7/patches/gawk-fix.patch

@@ -0,0 +1,38 @@
+# SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+Our version of gawk does not seem to like printing, at least in the way that
+this attempts to use it. Instead, make it print to console and use working
+bash redirects.
+
+--- lib/et/compile_et.sh.in	2022-05-18 19:26:17.182054784 +1000
++++ lib/et/compile_et.sh.in	2022-05-18 19:30:16.489294776 +1000
+@@ -44,14 +44,14 @@
+     exit 1;
+ fi
+ 
+-$AWK -f "${DIR}/et_h.awk" "outfile=${BASE}.h.$$" "outfn=${BASE}.h" "$ROOT.et"
++$AWK -f "${DIR}/et_h.awk" "$ROOT.et" > ${BASE}.h
+ if test -f ${BASE}.h && cmp -s ${BASE}.h.$$ ${BASE}.h ; then
+     rm -f ${BASE}.h.$$
+ else
+     mv -f ${BASE}.h.$$ ${BASE}.h
+     chmod a-w ${BASE}.h
+ fi
+-$AWK -f "${DIR}/et_c.awk" "outfile=${BASE}.c.$$" "outfn=${BASE}.c" "$ROOT.et"
++$AWK -f "${DIR}/et_c.awk" "$ROOT.et" > ${BASE}.c
+ if test -f ${BASE}.c && cmp -s ${BASE}.c.$$ ${BASE}.c ; then
+     rm -f ${BASE}.c.$$
+ else
+--- lib/ss/mk_cmds.sh.in	2022-05-18 19:33:16.024962919 +1000
++++ lib/ss/mk_cmds.sh.in	2022-05-18 19:33:39.650576476 +1000
+@@ -43,7 +43,7 @@
+ fi
+ 
+ ${SED} -f "${DIR}/ct_c.sed"  "${FILE}" \
+-	| ${AWK} -f "${DIR}/ct_c.awk" "rootname=${ROOT}" "outfile=${TMP}" -
++	| ${AWK} -f "${DIR}/ct_c.awk" "rootname=${ROOT}" - > "${TMP}"
+ 
+ if grep "^#__ERROR_IN_FILE" "${TMP}" > /dev/null; then
+ 	rm "${TMP}"