Add Makefile which allows easily rebuilding the charmap codecs.

Tools/unicode/Makefile

+#
+# Recreate the Python charmap codecs from the Unicode mapping
+# files available at ftp://ftp.unicode.org/
+#
+#(c) Copyright Marc-Andre Lemburg, 2005.
+#    Licensed to PSF under a Contributor Agreement.
+
+# Python binary to use
+PYTHON = python
+
+# Remove tool to use
+RM = /bin/rm
+
+### Generic targets
+
+all:	distclean mappings codecs
+
+codecs:	misc windows iso apple ebcdic custom-mappings
+
+### Mappings
+
+mappings:
+	ncftpget -R ftp.unicode.org . Public/MAPPINGS
+
+### Codecs
+
+build/:
+	mkdir build
+
+misc:	build/
+	$(PYTHON) gencodec.py MAPPINGS/VENDORS/MISC/ build/
+	$(RM) build/atarist.*
+	$(RM) build/us_ascii_quotes.*
+	$(RM) build/ibmgraph.*
+	$(RM) build/sgml.*
+	$(RM) -f build/readme.*
+
+custom-mappings:	build/
+	$(PYTHON) gencodec.py python-mappings/ build/
+
+windows:	build/
+	$(PYTHON) gencodec.py MAPPINGS/VENDORS/MICSFT/WINDOWS/ build/
+	$(RM) build/cp9*
+	$(RM) -f build/readme.*
+
+iso:	build/
+	$(PYTHON) gencodec.py MAPPINGS/ISO8859/ build/iso
+	$(RM) -f build/isoreadme.*
+
+apple:	build/
+	$(PYTHON) gencodec.py MAPPINGS/VENDORS/APPLE/ build/mac_
+	$(RM) build/mac_dingbats.*
+	$(RM) build/mac_japanese.*
+	$(RM) build/mac_chin*
+	$(RM) build/mac_korean.*
+	$(RM) build/mac_symbol.*
+	$(RM) build/mac_corpchar.*
+	$(RM) build/mac_devanaga.*
+	$(RM) build/mac_gaelic.*
+	$(RM) build/mac_gurmukhi.*
+	$(RM) build/mac_hebrew.*
+	$(RM) build/mac_inuit.*
+	$(RM) build/mac_thai.*
+	$(RM) build/mac_ukraine.*
+	$(RM) build/mac_arabic.py
+	$(RM) build/mac_celtic.*
+	$(RM) build/mac_gujarati.*
+	$(RM) build/mac_keyboard.*
+	$(RM) -f build/mac_readme.*
+
+ebcdic:	build/
+	$(PYTHON) gencodec.py MAPPINGS/VENDORS/MICSFT/EBCDIC/ build/
+	$(RM) -f build/readme.*
+
+### Cleanup
+
+clean:
+	$(RM) build/*
+
+distclean:	clean
+	$(RM) -rf MAPPINGS/