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/python-2.3.7/files/disable-unicode.patch

@@ -1,110 +0,0 @@
-SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
-
-SPDX-License-Identifier: PSF-2.0
-
-This is a nearly-equivalent patch to Python 2.0.1, with nearly
-identical reasoning.
-
-Python 2.3's unicode regeneration code is a bit too incompatible
-with Python 2.0.1.
-
---- Objects/unicodectype.c	2022-10-05 18:11:21.989603599 +1100
-+++ Objects/unicodectype.c	2022-10-05 18:14:57.335843857 +1100
-@@ -29,31 +29,12 @@
-     const unsigned char digit;
- } _PyUnicode_TypeRecord;
- 
--#include "unicodetype_db.h"
--
--static const _PyUnicode_TypeRecord *
--gettyperecord(Py_UNICODE code)
--{
--    int index;
--
--    if (code >= 0x110000)
--        index = 0;
--    else {
--        index = index1[(code>>SHIFT)];
--        index = index2[(index<<SHIFT)+(code&((1<<SHIFT)-1))];
--    }
--
--    return &_PyUnicode_TypeRecords[index];
--}
--
- /* Returns 1 for Unicode characters having the category 'Zl' or type
-    'B', 0 otherwise. */
- 
- int _PyUnicode_IsLinebreak(Py_UNICODE ch)
- {
--    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
--
--    return (ctype->flags & LINEBREAK_MASK) != 0;
-+    return 0;
- }
- 
- /* Returns the titlecase Unicode characters corresponding to ch or just
-@@ -61,18 +42,7 @@
- 
- Py_UNICODE _PyUnicode_ToTitlecase(register Py_UNICODE ch)
- {
--    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
--    int delta;
--
--    if (ctype->title)
--        delta = ctype->title;
--    else
--	delta = ctype->upper;
--
--    if (delta >= 32768)
--	    delta -= 65536;
--
--    return ch + delta;
-+    return ch;
- }
- 
- /* Returns 1 for Unicode characters having the category 'Lt', 0
-@@ -80,9 +50,7 @@
- 
- int _PyUnicode_IsTitlecase(Py_UNICODE ch)
- {
--    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
--
--    return (ctype->flags & TITLE_MASK) != 0;
-+    return 0;
- }
- 
- /* Returns the integer decimal (0-9) for Unicode characters having
-@@ -90,9 +58,7 @@
- 
- int _PyUnicode_ToDecimalDigit(Py_UNICODE ch)
- {
--    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
--
--    return (ctype->flags & DECIMAL_MASK) ? ctype->decimal : -1;
-+    return -1;
- }
- 
- int _PyUnicode_IsDecimalDigit(Py_UNICODE ch)
-@@ -107,9 +73,7 @@
- 
- int _PyUnicode_ToDigit(Py_UNICODE ch)
- {
--    const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
--
--    return (ctype->flags & DIGIT_MASK) ? ctype->digit : -1;
-+    return -1;
- }
- 
- int _PyUnicode_IsDigit(Py_UNICODE ch)
---- Makefile.pre.in	2005-01-12 00:49:02.000000000 +1100
-+++ Makefile.pre.in	2022-10-05 18:35:05.979846971 +1100
-@@ -456,8 +456,7 @@
- Python/importdl.o: $(srcdir)/Python/importdl.c
- 		$(CC) -c $(PY_CFLAGS) -I$(DLINCLDIR) -o $@ $(srcdir)/Python/importdl.c
- 
--Objects/unicodectype.o:	$(srcdir)/Objects/unicodectype.c \
--				$(srcdir)/Objects/unicodetype_db.h
-+Objects/unicodectype.o:	$(srcdir)/Objects/unicodectype.c
- 
- ############################################################################
- # Header files