Move the rules to build the info files here.

Doc/info/Makefile

+# Generate the Python "info" documentation.
+
+# These is only used for .info generation:
+EMACS=		emacs
+MAKEINFO=	makeinfo
+PYTHON=		python
+PARTPARSE=	$(PYTHON) ../tools/partparse.py
+
+
+all:	python-lib.info
+
+
+.PRECIOUS:	python-lib.texi
+
+# The sed script in this target fixes a really nasty little condition in
+# libcgi.tex where \e has to be used in a group to get the right behavior,
+# and makeinfo can't handle a group without a leading @command.  But at
+# least the info file gets generated.
+
+lib1.texi: $(LIBFILES) texipre.dat texipost.dat ../tools/partparse.py
+	$(PARTPARSE) -o $@ `../tools/whichlibs`
+	sed 's/"{\\}n{\\}n/"\\n\\n/' $@ >temp.texi
+	mv temp.texi $@
+
+python-lib.texi: lib1.texi ../tools/fix.el
+	cp lib1.texi temp.texi
+	$(EMACS) -batch -l ../tools/fix.el -f save-buffer -kill
+	mv temp.texi $@
+
+python-lib.info: python-lib.texi
+	$(MAKEINFO) --footnote-style end --fill-column 72 \
+		    --paragraph-indent 0 $<