patch 8.2.1648: Amiga: no common build file for Amiga (-like) systems

Problem:    Amiga: no common build file for Amiga (-like) systems.
Solution:   Turn Make_morph.mak into Make_ami.mak. (Ola Söder, closes #6805)
diff --git a/src/Make_ami.mak b/src/Make_ami.mak
new file mode 100644
index 0000000..88b3986
--- /dev/null
+++ b/src/Make_ami.mak
@@ -0,0 +1,201 @@
+#
+# Makefile for AROS, AmigaOS4 and MorphOS.
+#
+BIN = vim
+CC ?= gcc
+LD = $(CC)
+UNM ?= $(shell uname)
+DEBUG ?= no
+BUILD ?= huge
+CFLAGS = -c -O3
+
+# Common compiler flags
+CFLAGS += \
+	-DNO_ARP \
+	-DUSE_TMPNAM \
+	-DHAVE_STDARG_H \
+	-DHAVE_TGETENT \
+	-DHAVE_TERMCAP \
+	-DNEW_SHELLSIZE \
+	-I proto \
+	-Wno-attributes \
+	-Wextra
+
+# Vim 'huge' build
+ifeq ($(BUILD),huge)
+CFLAGS += \
+	-DFEAT_BROWSE \
+	-DFEAT_MOUSE \
+	-DFEAT_HUGE
+else
+
+# Vim 'big' build
+ifeq ($(BUILD),big)
+CFLAGS += \
+	-DFEAT_BROWSE \
+	-DFEAT_MOUSE \
+	-DFEAT_BIG
+else
+
+# Vim 'normal' build
+ifeq ($(BUILD),normal)
+CFLAGS +=\
+	-DFEAT_BROWSE \
+	-DFEAT_MOUSE \
+	-DFEAT_NORMAL
+else
+
+# Vim 'small' build
+ifeq ($(BUILD),small)
+CFLAGS += -DFEAT_SMALL
+else
+
+# Vim 'tiny' build
+ifeq ($(BUILD),tiny)
+CFLAGS += -DFEAT_TINY
+endif
+endif
+endif
+endif
+endif
+
+# OS specific compiler flags
+ifeq ($(UNM),AmigaOS)
+LDFLAGS = -mcrt=clib2 -lauto -lm -lnet
+CFLAGS += -DHAVE_FSYNC -D__USE_INLINE__ -mcrt=clib2
+else
+ifeq ($(UNM),AROS)
+LDFLAGS = -DHAVE_FSYNC -ldebug
+else
+ifeq ($(UNM),MorphOS)
+LDFLAGS = -ldebug -noixemul
+endif
+endif
+endif
+
+# Patch level used for Amiga style version string
+ifdef PATCHLEVEL
+CFLAGS += -DPATCHLEVEL=\"$(PATCHLEVEL)\"
+endif
+
+# Common sources
+SRC += \
+	arabic.c \
+	arglist.c \
+	autocmd.c \
+	beval.c \
+	blob.c \
+	blowfish.c \
+	buffer.c \
+	bufwrite.c \
+	change.c \
+	charset.c \
+	cindent.c \
+	clientserver.c \
+	clipboard.c \
+	cmdhist.c \
+	cmdexpand.c \
+	crypt.c \
+	crypt_zip.c \
+	debugger.c \
+	dict.c \
+	diff.c \
+	digraph.c \
+	drawline.c \
+	drawscreen.c \
+	edit.c \
+	eval.c \
+	evalbuffer.c \
+	evalfunc.c \
+	evalvars.c \
+	evalwindow.c \
+	ex_cmds.c \
+	ex_cmds2.c \
+	ex_docmd.c \
+	ex_eval.c \
+	ex_getln.c \
+	fileio.c \
+	filepath.c \
+	findfile.c \
+	fold.c \
+	getchar.c \
+	hardcopy.c \
+	hashtab.c \
+	help.c \
+	highlight.c \
+	if_cscope.c \
+	indent.c \
+	insexpand.c \
+	json.c \
+	list.c \
+	locale.c \
+	main.c \
+	mark.c \
+	map.c \
+	match.c \
+	mbyte.c \
+	memfile.c \
+	memline.c \
+	menu.c \
+	message.c \
+	misc1.c \
+	misc2.c \
+	mouse.c \
+	move.c \
+	normal.c \
+	ops.c \
+	option.c \
+	optionstr.c \
+	os_amiga.c \
+	popupmenu.c \
+	popupwin.c \
+	quickfix.c \
+	regexp.c \
+	register.c \
+	screen.c \
+	scriptfile.c \
+	search.c \
+	session.c \
+	sha256.c \
+	sign.c \
+	spell.c \
+	spellfile.c \
+	spellsuggest.c \
+	syntax.c \
+	tag.c \
+	term.c \
+	termlib.c \
+	testing.c \
+	textformat.c \
+	textobject.c \
+	textprop.c \
+	time.c \
+	typval.c \
+	ui.c \
+	undo.c \
+	usercmd.c \
+	userfunc.c \
+	version.c \
+	viminfo.c \
+	vim9compile.c \
+	vim9execute.c \
+	vim9script.c \
+	vim9type.c \
+	window.c \
+	xdiff/xdiffi.c \
+	xdiff/xemit.c \
+	xdiff/xhistogram.c \
+	xdiff/xpatience.c \
+	xdiff/xprepare.c \
+	xdiff/xutils.c
+
+OBJ = $(SRC:.c=.o)
+
+# Build everything - Ignoring header dependencies.
+$(BIN): $(OBJ)
+	${LD} -o $(BIN) $(OBJ) $(LDFLAGS)
+
+# Clean up
+.PHONY: clean
+clean:
+	$(RM) -fv $(OBJ) $(BIN)