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.

sysa/util-linux-2.19.1/patches/broken-programs.patch

@@ -1,81 +0,0 @@
-SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
-
-SPDX-License-Identifier: GPL-2.0-or-later
-
-We disable the following programs for the following reasons:
-
-* script: doesn't build with musl.
-* flock: GCC doesn't like some directive.
-* fstrim: ??? doesn't build (missing/bad linux header?)
-* fsfreeze: ditto.
-* hexdump: musl incompatibility.
-* column: musl incompatibility.
-
-diff --color -ru misc-utils/Makefile.am misc-utils/Makefile.am
---- misc-utils/Makefile.am	2021-06-13 09:34:49.669370352 +1000
-+++ misc-utils/Makefile.am	2021-06-13 09:42:06.644523490 +1000
-@@ -6,8 +6,8 @@
- sbin_PROGRAMS =
- usrsbin_exec_PROGRAMS =
- 
--usrbin_exec_PROGRAMS = cal ddate logger look mcookie \
--	namei script whereis scriptreplay
-+usrbin_exec_PROGRAMS = cal ddate look mcookie \
-+	namei whereis scriptreplay
- EXTRA_DIST += README.cal README.ddate README.namei README.namei2
- 
- mcookie_SOURCES = mcookie.c $(top_srcdir)/lib/md5.c
-@@ -50,18 +50,6 @@
- wipefs_LDADD = $(ul_libblkid_la)
- wipefs_CFLAGS = $(AM_CFLAGS) -I$(ul_libblkid_incdir)
- 
--if BUILD_LSBLK
--bin_PROGRAMS += lsblk
--dist_man_MANS += lsblk.8
--lsblk_SOURCES = lsblk.c \
--		$(top_srcdir)/lib/canonicalize.c \
--		$(top_srcdir)/lib/ismounted.c \
--		$(top_srcdir)/lib/tt.c \
--		$(top_srcdir)/lib/strutils.c
--lsblk_LDADD = $(ul_libblkid_la)
--lsblk_CFLAGS = $(AM_CFLAGS) -I$(ul_libblkid_incdir)
--endif
--
- if HAVE_STATIC_BLKID
- sbin_PROGRAMS += blkid.static
- blkid_static_SOURCES = $(blkid_SOURCES)
-diff --color -ru sys-utils/Makefile.am sys-utils/Makefile.am
---- sys-utils/Makefile.am	2021-06-13 09:34:49.686370532 +1000
-+++ sys-utils/Makefile.am	2021-06-13 09:42:06.644523490 +1000
-@@ -2,7 +2,7 @@
- 
- bin_PROGRAMS =
- sbin_PROGRAMS =
--usrbin_exec_PROGRAMS = flock ipcrm ipcs ipcmk renice setsid
-+usrbin_exec_PROGRAMS = ipcrm ipcs ipcmk renice setsid
- usrsbin_exec_PROGRAMS = readprofile
- 
- dist_man_MANS = flock.1 ipcrm.1 ipcs.1 ipcmk.1 renice.1 setsid.1 \
-@@ -10,8 +10,8 @@
- 
- if LINUX
- bin_PROGRAMS += dmesg
--sbin_PROGRAMS += ctrlaltdel fsfreeze fstrim
--usrbin_exec_PROGRAMS += cytune setarch
-+sbin_PROGRAMS += ctrlaltdel fsfreeze
-+usrbin_exec_PROGRAMS += cytune
- usrsbin_exec_PROGRAMS += ldattach tunelp rtcwake
- 
- dist_man_MANS += dmesg.1 ctrlaltdel.8 cytune.8 setarch.8 \
-diff --color -ru text-utils/Makefile.am text-utils/Makefile.am
---- text-utils/Makefile.am	2021-06-13 09:34:49.696370638 +1000
-+++ text-utils/Makefile.am	2021-06-13 09:46:19.230591066 +1000
-@@ -2,7 +2,7 @@
- 
- EXTRA_DIST = README.clear README.col
- 
--usrbin_exec_PROGRAMS = col colcrt colrm column hexdump rev line tailf
-+usrbin_exec_PROGRAMS = col colcrt colrm rev line tailf
- 
- hexdump_SOURCES = hexdump.c conv.c display.c hexsyntax.c parse.c \
- 		  hexdump.h