Add info make target that was missing in old Sphinx

docs/Makefile

@@ -23,6 +23,8 b' help:'
 	@echo "  pickle    to make pickle files (usable by e.g. sphinx-web)"
 	@echo "  htmlhelp  to make HTML files and a HTML help project"
 	@echo "  latex     to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+	@echo "  texinfo   to make Texinfo files"
+	@echo "  info      to make Texinfo files and run them through makeinfo"
 	@echo "  changes   to make an overview over all changed/added/deprecated items"
 	@echo "  linkcheck to check all external links for integrity"
 	@echo
@@ -119,3 +121,18 b' nightly: dist'
 
 gh-pages: clean html
 	python gh-pages.py
+
+texinfo:
+	mkdir -p $(BUILDDIR)/texinfo
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo
+	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
+	@echo "Run \`make' in that directory to run these through makeinfo" \
+	      "(use \`make info' here to do that automatically)."
+
+info:
+	mkdir -p $(BUILDDIR)/texinfo
+	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	@echo "Running Texinfo files through makeinfo..."
+	make -C $(BUILDDIR)/texinfo info
+	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."

docs/source/conf.py

@@ -208,6 +208,19 b' latex_documents = ['
 latex_use_modindex = True
 
 
+# Options for texinfo output
+# --------------------------
+
+texinfo_documents = [
+  (master_doc, 'ipython', 'IPython Documentation',
+   'The IPython Development Team',
+   'IPython',
+   'IPython Documentation',
+   'Programming',
+   1),
+]
+
+
 # Cleanup
 # -------
 # delete release info to avoid pickling errors from sphinx