Fixed 'make sdist' to work with setuptools

MANIFEST.in

@@ -8,4 +8,4 @@ recursive-include doc/src *.rst *.py *.css Makefile
 recursive-include scripts *.py *.sh
 include scripts/maketypes.sh scripts/buildtypes.py
 include AUTHORS README.rst INSTALL LICENSE NEWS
-include PKG-INFO MANIFEST.in MANIFEST setup.py setup.cfg Makefile
+include MANIFEST.in setup.py setup.cfg Makefile

Makefile

@@ -92,14 +92,9 @@ $(PACKAGE)/tests/%.py: tests/%.py
 	$(PYTHON) setup.py build_py $(BUILD_OPT)
 	touch $@
 
-$(SDIST): MANIFEST $(SOURCE)
+$(SDIST): $(SOURCE)
 	$(PYTHON) setup.py sdist $(SDIST_OPT)
 
-MANIFEST: MANIFEST.in $(SOURCE)
-	# Run twice as MANIFEST.in includes MANIFEST
-	$(PYTHON) setup.py sdist --manifest-only
-	$(PYTHON) setup.py sdist --manifest-only
-
 # docs depend on the build as it partly use introspection.
 doc/html/genindex.html: $(PLATLIB) $(PURELIB) $(SOURCE_DOC)
 	$(MAKE) -C doc html
@@ -111,5 +106,5 @@ doc/docs.zip: doc/html/genindex.html
 	(cd doc/html && zip -r ../docs.zip *)
 
 clean:
-	rm -rf build MANIFEST
+	rm -rf build
 	$(MAKE) -C doc clean