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/flex-2.6.4/mk/main.mk

@@ -0,0 +1,46 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+# SPDX-FileCopyrightText: 2022 fosslinux <fosslinux@aussies.space>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+CC := tcc
+CFLAGS = -DVERSION=\"2.6.4\" \
+         -DM4=\"m4\" \
+         -DHAVE_LIMITS_H=1
+
+all: flex
+
+flex: buf.o ccl.o dfa.o ecs.o filter.o gen.o main.o misc.o nfa.o options.o parse.o regex.o scan.o scanflags.o scanopt.o skel.o sym.o tables.o tables_shared.o tblcmp.o yylex.o
+	$(CC) -o $@ $^ -lm
+
+flex-tmp: buf.o ccl.o dfa.o ecs.o filter.o gen.o main.o misc.o nfa.o options.o parse.o regex.o scan-tmp.o scanflags.o scanopt.o skel.o sym.o tables.o tables_shared.o tblcmp.o yylex.o
+	$(CC) -o $@ $^ -lm
+
+%.o: %.c
+	$(CC) $(CFLAGS) -g -c -I. -o $@ $<
+
+main.o: parse.h
+scan.o: parse.h
+scan-tmp.o: parse.h
+yylex.o: parse.h
+
+parse.c parse.h: parse.y
+	yacc -d parse.y
+	mv y.tab.h parse.h
+	mv y.tab.c parse.c
+	echo 'extern int yylval;' >> parse.h
+
+scan-tmp.c: scan.l
+	flex scan.l
+	mv lex.yy.c scan-tmp.c
+
+scan.c: scan.l flex-tmp
+	./flex-tmp scan.l
+	mv lex.yy.c scan.c
+
+skel.c: mkskel.sh flex.skl
+	/bin/sh ./mkskel.sh . m4 2.6.4 > skel.c
+
+install: all
+	install -D flex $(DESTDIR)$(PREFIX)/bin/flex
+	ln -sf flex $(DESTDIR)$(PREFIX)/bin/lex

steps/flex-2.6.4/pass1.sh

@@ -0,0 +1,27 @@
+# SPDX-FileCopyrightText: 2021 Andrius Štikonas <andrius@stikonas.eu>
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+src_prepare() {
+    default
+
+    mv Makefile src/
+    touch src/config.h
+    rm src/parse.c src/parse.h src/scan.c src/skel.c
+}
+
+src_compile() {
+    cd src
+    make -j1 PREFIX="${PREFIX}"
+    cd ..
+}
+
+src_install() {
+    cd src
+    default
+    cd ..
+
+    # Remove yacc, we won't need it any longer
+    rm "${PREFIX}/bin/yacc"
+    rm /yaccpar
+}

steps/flex-2.6.4/sources

@@ -0,0 +1 @@
+https://github.com/westes/flex/releases/download/v2.6.4/flex-2.6.4.tar.gz e87aae032bf07c26f85ac0ed3250998c37621d95f8bd748b31f15b33c45ee995