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/perl-5.000/files/config.h

@@ -0,0 +1,74 @@
+// SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+// SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
+
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define MEM_ALIGNBYTES 8
+#define BIN "/usr/bin"
+#define BYTEORDER 0x4321
+#define CPPSTDIN "tcc -E"
+#define CPPMINUS "-"
+#define HAS_ALARM
+#define HAS_FORK
+#define HAS_MKDIR
+#define HAS_PAUSE
+#define HAS_RMDIR
+#define HAS_STRERROR
+#define HAS_SYS_ERRLIST
+#define Strerror(e) strerror(e)
+
+#define HAS_SYSCALL
+#define HAS_TIMES
+
+#define HAS_VPRINTF
+#define Gid_t gid_t
+
+#define I_DIRENT
+#define Direntry_t struct dirent
+
+#define I_DLFCN
+#define I_FCNTL
+#define I_LIMITS
+#define I_MATH
+#define I_NETINET_IN
+#define I_STDDEF
+#define I_STDLIB
+#define I_STRING
+#define I_SYS_DIR
+#define I_SYS_IOCTL
+#define I_SYS_PARAM
+#define I_SYS_SELECT
+#define I_SYS_TIMES
+#define I_TERMIOS
+#define I_TIME
+#define I_UNISTD
+#define I_UTIME
+#define I_STDARG
+
+#define INTSIZE 4
+#define Off_t off_t
+
+#define PRIVLIB "/usr/lib/perl5"
+
+#define _(args) args
+
+#define RANDBITS 31
+
+#define SCRIPTDIR "/usr/bin"
+
+#define SIG_NAME "ZERO","HUP","INT","QUIT","ILL","TRAP","IOT","BUS","FPE","KILL","USR1","SEGV","USR2","PIPE","ALRM","TERM","STKFLT","CHLD","CONT","STOP","TSTP","TTIN","TTOU","URG","XCPU","XFSZ","VTALRM","PROF","WINCH", "IO", "POLL", "PWR", "SYS", "UNUSED"
+
+#define Size_t size_t
+
+#define STDCHAR char
+#define Uid_t uid_t
+
+#define LOC_SED "/usr/bin/sed"
+#define ARCHLIB "/usr/lib/perl5/"
+
+#define CAT2(a,b) a##b
+#define Gconvert(x,n,t,b) gcvt((x),(n),(b))
+
+#define Time_t time_t
+
+#define SSize_t ssize_t

steps/perl-5.000/files/keywords.sh

@@ -0,0 +1,8 @@
+#!/bin/sh -e
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# This file replaces keywords.pl
+
+sed -e '1,/__END__/ d' keywords.pl | sed '1d' | awk '{print "#define", "KEY_"$0, NR-1}' > keywords.h

steps/perl-5.000/files/opcode.awk

@@ -0,0 +1,31 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+{
+    argsum = 0
+
+    argsum = or(argsum,   1 * (index($4, "m") != 0))
+    argsum = or(argsum,   2 * (index($4, "f") != 0))
+    argsum = or(argsum,   4 * (index($4, "s") != 0))
+    argsum = or(argsum,   8 * (index($4, "t") != 0))
+    argsum = or(argsum,  16 * (index($4, "i") != 0))
+    argsum = or(argsum,  32 * (index($4, "I") != 0))
+    argsum = or(argsum,  64 * (index($4, "d") != 0))
+    argsum = or(argsum, 128 * (index($4, "u") != 0))
+
+    mul = 256
+
+    arg_val="SLAHCFR"
+
+    argstr=$5
+    gsub(" ", "", argstr)
+    split(argstr, args, "")
+    for(i=1; i<=length(argstr); i+=1) {
+        argnum = (index(argstr, "?") != 0) * 8
+        argnum += index(arg_val, args[i])
+        argsum += argnum * mul
+        mul = lshift(mul, 4)
+    }
+    printf("\t0x%08x,\t/* %s */\n", argsum, $1)
+}

steps/perl-5.000/files/opcode.sh

@@ -0,0 +1,72 @@
+#!/bin/sh -e
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# This file replaces opcode.pl
+
+sed -e '1,/__END__/ d; s/[#].*$//g; /^$/d' opcode.pl | tr -s '\t' '\t' > data
+
+exec 1> opcode.h
+
+# Emit defines.
+echo "typedef enum {";
+awk '{print "\tOP_"toupper($1)","}' data
+echo "	OP_max"
+echo "} opcode;"
+echo "#define MAXO " $(wc -l data | awk '{print $1}')
+
+# Emit opnames.
+printf "
+#ifndef DOINIT
+EXT char *op_name[];
+#else
+EXT char *op_name[] = {
+"
+awk -F'\t' '{print "\t\""$2"\","}' data
+printf "};
+#endif
+
+"
+
+# Emit function declarations.
+awk -F'\t' '{print "OP *\t"$3"\t_((OP* op));"}' data | sort | uniq
+awk '{print "OP *\tpp_"$1"\t_((void));"}' data
+
+# Emit ppcode switch array.
+printf "
+#ifndef DOINIT
+EXT OP * (*ppaddr[])();
+#else
+EXT OP * (*ppaddr[])() = {
+"
+awk '{print "\tpp_"$1","}' data
+printf "};
+#endif
+"
+
+# Emit check routines.
+printf "
+#ifndef DOINIT
+EXT OP * (*check[])();
+#else
+EXT OP * (*check[])() = {
+"
+awk -F'\t' '{print "\t"$3",\t/* "$1" */"}' data
+printf "};
+#endif
+"
+
+# Emit allowed argument types.
+printf "
+#ifndef DOINIT
+EXT U32 opargs[];
+#else
+EXT U32 opargs[] = {
+"
+awk -F'\t' -f opcode.awk data
+printf "};
+#endif
+"
+
+rm data