Added the 'clean' command to the instructions

distutils doesn't seem to always detect when it needs to rebuild when
it should.

Author: Richard Jones

BUILD.txt

@@ -17,19 +17,25 @@ want it to stay that way, too.
 This means that we only need to ever build source releases. This is done by
 running:
 
+  0. python setup.py clean --all
   1. Edit setup.py to ensure that all information therein (version, contact
      information etc) is correct.
-  2. python setup.py sdist -o
+  2. python setup.py sdist --manifest-only
   3. Check the MANIFEST to make sure that any new files are included. If
      they are not, edit MANIFEST.in to include them. "Documentation" for
      MANIFEST.in may be found in disutils.filelist._parse_template_line.
   4. python setup.py sdist
-     (if you find sdist a little verbose, add "-q" to the end of the command)
+     (if you find sdist a little verbose, add "--quiet" to the end of the
+      command)
   5. FTP the tar.gz from the dist directory to to the "incoming" directory on
      "upload.sourceforge.net".
   6. Make a quick release at:
       http://sourceforge.net/project/admin/qrs.php?package_id=&group_id=31577
 
+So, those commands in a nice, cut'n'pasteable form :)
+python setup.py clean --all
+python setup.py sdist --manifest-only
+python setup.py sdist --quiet
 
 
 2. Author