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/python-2.5.6/patches/keyword.patch

@@ -0,0 +1,28 @@
+SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+
+SPDX-License-Identifier: PSF-2.0
+
+frozenset() is a feature only added in Python 2.5, but we are
+building Python 2.5, so we must bypass this logic. (It is not
+critical, so we can just remove it).
+
+--- Lib/keyword.py	2022-10-11 12:51:13.050744758 +1100
++++ Lib/keyword.py	2022-10-11 12:52:05.946372559 +1100
+@@ -10,7 +10,7 @@
+     python Lib/keyword.py
+ """
+ 
+-__all__ = ["iskeyword", "kwlist"]
++__all__ = ["kwlist"]
+ 
+ kwlist = [
+ #--start keywords--
+@@ -48,8 +48,6 @@
+ #--end keywords--
+         ]
+ 
+-iskeyword = frozenset(kwlist).__contains__
+-
+ def main():
+     import sys, re
+ 

steps/python-2.5.6/patches/pgen-timestamp.patch

@@ -0,0 +1,36 @@
+SPDX-FileCopyrightText: 2011 Antoine Pitrou <solipsis@pitrou.net>
+
+SPDX-License-Identifier: PSF-2.0
+
+Don't run pgen twice when using make -j
+Don't ignore pgen error (on "make Parser/pgen.stamp")
+
+diff --git a/Makefile.pre.in b/Makefile.pre.in
+index 25a82aff01..03f85fd04b 100644
+--- Makefile.pre.in
++++ Makefile.pre.in
+@@ -471,10 +471,12 @@ Modules/getpath.o: $(srcdir)/Modules/getpath.c Makefile
+ Modules/python.o: $(srcdir)/Modules/python.c
+ 	$(MAINCC) -c $(PY_CFLAGS) -o $@ $(srcdir)/Modules/python.c
+ 
+-
+-$(GRAMMAR_H) $(GRAMMAR_C): $(PGEN) $(GRAMMAR_INPUT)
++# Use a stamp file to prevent make -j invoking pgen twice
++$(GRAMMAR_H) $(GRAMMAR_C): Parser/pgen.stamp
++Parser/pgen.stamp: $(PGEN) $(GRAMMAR_INPUT)
+ 		-@ mkdir Include
+-		-$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
++		$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
++		-touch Parser/pgen.stamp
+ 
+ $(PGEN):	$(PGENOBJS)
+ 		$(CC) $(OPT) $(LDFLAGS) $(PGENOBJS) $(LIBS) -o $(PGEN)
+@@ -1030,7 +1032,7 @@ clean: pycremoval
+ 
+ clobber: clean
+ 	-rm -f $(BUILDPYTHON) $(PGEN) $(LIBRARY) $(LDLIBRARY) $(DLLLIBRARY) \
+-		tags TAGS \
++		tags TAGS Parser/pgen.stamp \
+ 		config.cache config.log pyconfig.h Modules/config.c
+ 	-rm -rf build platform
+ 	-rm -rf $(PYTHONFRAMEWORKDIR)

steps/python-2.5.6/patches/posixmodule.patch

@@ -0,0 +1,33 @@
+SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+
+SPDX-License-Identifier: PSF-2.0
+
+musl (correctly) implements the POSIX posix_close function, however
+this was added after Python 2.5.6 was released.
+
+--- Modules/posixmodule.c	2022-10-05 18:38:46.718131893 +1100
++++ Modules/posixmodule.c	2022-10-05 18:39:07.049250312 +1100
+@@ -5208,12 +5208,12 @@
+ }
+ 
+ 
+-PyDoc_STRVAR(posix_close__doc__,
++PyDoc_STRVAR(py_posix_close__doc__,
+ "close(fd)\n\n\
+ Close a file descriptor (for low level IO).");
+ 
+ static PyObject *
+-posix_close(PyObject *self, PyObject *args)
++py_posix_close(PyObject *self, PyObject *args)
+ {
+ 	int fd, res;
+ 	if (!PyArg_ParseTuple(args, "i:close", &fd))
+@@ -7371,7 +7371,7 @@
+ 	{"tcsetpgrp",	posix_tcsetpgrp, METH_VARARGS, posix_tcsetpgrp__doc__},
+ #endif /* HAVE_TCSETPGRP */
+ 	{"open",	posix_open, METH_VARARGS, posix_open__doc__},
+-	{"close",	posix_close, METH_VARARGS, posix_close__doc__},
++	{"close",	py_posix_close, METH_VARARGS, py_posix_close__doc__},
+ 	{"dup",		posix_dup, METH_VARARGS, posix_dup__doc__},
+ 	{"dup2",	posix_dup2, METH_VARARGS, posix_dup2__doc__},
+ 	{"lseek",	posix_lseek, METH_VARARGS, posix_lseek__doc__},

steps/python-2.5.6/patches/sorted.patch

@@ -0,0 +1,29 @@
+SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+
+SPDX-License-Identifier: PSF-2.0
+
+sorted() was only added in Python 2.5. But we are building Python 2.5.
+
+We cannot use .sort(), as it doesn't support the key= parameter.
+Instead we just use a basic custom selection sort to sort it ourselves
+using a custom key.
+
+--- Tools/compiler/astgen.py.bak	2022-07-11 09:24:59.600238862 +1000
++++ Tools/compiler/astgen.py	2022-07-11 09:32:25.814974174 +1000
+@@ -215,7 +215,15 @@
+             # some extra code for a Node's __init__ method
+             name = mo.group(1)
+             cur = classes[name]
+-    return sorted(classes.values(), key=lambda n: n.name)
++    ret = classes.values()
++    # basic custom selection sort
++    for i in range(len(ret)):
++        min_i = i
++        for j in range(i + 1, len(ret)):
++            if ret[min_i].name > ret[j].name:
++                min_i = j
++        ret[i], ret[min_i] = ret[min_i], ret[i]
++    return ret
+ 
+ def main():
+     prologue, epilogue = load_boilerplate(sys.argv[-1])

steps/python-2.5.6/patches/sre_constants.patch

@@ -0,0 +1,20 @@
+SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+
+SPDX-License-Identifier: PSF-2.0
+
+Again, Python 2.5 added the key= argument for sorting functions,
+which is not available when we are building Python 2.5.
+
+Sorting is absolutely unnessecary when generating defines for a
+header file so we can just remove it.
+
+--- Lib/sre_constants.py	2004-08-25 12:22:30.000000000 +1000
++++ Lib/sre_constants.py	2022-10-09 20:18:40.332233858 +1100
+@@ -219,7 +219,6 @@
+ if __name__ == "__main__":
+     def dump(f, d, prefix):
+         items = d.items()
+-        items.sort(key=lambda a: a[1])
+         for k, v in items:
+             f.write("#define %s_%s %s\n" % (prefix, k.upper(), v))
+     f = open("sre_constants.h", "w")