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/bison-3.4.1/files/parse-gram.h

@@ -1,160 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-/*
- * This file is based on parse-gram.y from GNU Bison 3.4.1. It is the
- * header for an implementation of a subset of the grammar described
- * by parse-gram.y, just enough to provide a bootstrapping path for
- * Bison.
- *
- * Copyright (c) 2020, Giovanni Mascellani <gio@debian.org>
- *
- * The copyright notice of the original file follows. This file is
- * distributed under the same license and with the same conditions.
- */
-
-/* Bison Grammar Parser                             -*- C -*-
-
-   Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
-
-   This file is part of Bison, the GNU Compiler Compiler.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation, either version 3 of the License, or
-   (at your option) any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-#ifndef PARSE_GRAM_H
-#define PARSE_GRAM_H
-
-/* %code requires  */
-
-  #include "symlist.h"
-  #include "symtab.h"
-
-  typedef enum
-  {
-    param_none   = 0,
-    param_lex    = 1 << 0,
-    param_parse  = 1 << 1,
-    param_both   = param_lex | param_parse
-  } param_type;
-
-  #include "muscle-tab.h"
-  typedef struct
-  {
-    char const *chars;
-    muscle_kind kind;
-  } value_type;
-
-
-enum gram_tokentype {
-    GRAM_EOF = 0,
-    ID = 300,
-    STRING,
-    BRACED_CODE,
-    INT,
-    PERCENT_DEFINE,
-    PERCENT_DEFINES,
-    PERCENT_VERBOSE,
-    SEMICOLON,
-    PERCENT_TOKEN,
-    PERCENT_TYPE,
-    PERCENT_EMPTY,
-    COLON,
-    PERCENT_EXPECT,
-    PERCENT_PERCENT,
-    PERCENT_INITIAL_ACTION,
-    BRACKETED_ID,
-    PIPE,
-    EPILOGUE,
-    TAG,
-    PERCENT_CODE,
-    ID_COLON,
-
-    PERCENT_NONASSOC,
-    PERCENT_FLAG,
-    PERCENT_DEFAULT_PREC,
-    PERCENT_DESTRUCTOR,
-    PERCENT_DPREC,
-    PERCENT_EXPECT_RR,
-    EQUAL,
-    TAG_ANY,
-    CHAR,
-    BRACED_PREDICATE,
-    PERCENT_START,
-    PERCENT_UNION,
-    PERCENT_ERROR_VERBOSE,
-    PERCENT_NAME_PREFIX,
-    PERCENT_PURE_PARSER,
-    PERCENT_RIGHT,
-    PERCENT_PREC,
-    PERCENT_FILE_PREFIX,
-    PERCENT_YACC,
-    PERCENT_GLR_PARSER,
-    PERCENT_LANGUAGE,
-    PERCENT_LEFT,
-    PERCENT_PARAM,
-    PERCENT_MERGE,
-    PERCENT_NO_DEFAULT_PREC,
-    PERCENT_NO_LINES,
-    PERCENT_NONDETERMINISTIC_PARSER,
-    PERCENT_NTERM,
-    PERCENT_OUTPUT,
-    PERCENT_PRECEDENCE,
-    PRECENT_PRINTER,
-    PERCENT_REQUIRE,
-    PERCENT_SKELETON,
-    PERCENT_TOKEN_TABLE,
-    TAG_NONE,
-    PROLOGUE,
-    PERCENT_PRINTER,
-};
-
-union GRAM_STYPE {
-    value_type value;
-    uniqstr ID;
-    char *STRING;
-    symbol *symbol;
-    named_ref *named_ref_opt;
-    uniqstr tag_opt;
-    char *BRACED_CODE;
-    char *EPILOGUE;
-    symbol *id_colon;
-    uniqstr ID_COLON;
-    int int_opt;
-    int INT;
-    symbol *string_as_id;
-    symbol *string_as_id_opt;
-    symbol *token_decl;
-    symbol_list *token_decl_1;
-    symbol_list *token_decls;
-    symbol_list *symbol_decls;
-    symbol_list *symbol_decl_1;
-    uniqstr BRACKETED_ID;
-    symbol *id;
-    uniqstr TAG;
-
-    uniqstr PERCENT_FLAG;
-    uniqstr PERCENT_FILE_PREFIX;
-    uniqstr PERCENT_NAME_PREFIX;
-    uniqstr PERCENT_YACC;
-    param_type PERCENT_PARAM;
-    uniqstr PERCENT_PURE_PARSER;
-    uniqstr PERCENT_ERROR_VERBOSE;
-    unsigned char CHAR;
-    char *BRACED_PREDICATE;
-    char *PROLOGUE;
-};
-typedef union GRAM_STYPE GRAM_STYPE;
-
-int gram_parse (void);
-
-#endif