buildbot: install Sphinx 1.0.1 (instead of latest) to avoid Sphinx bug matplotlib#501

svn path=/trunk/matplotlib/; revision=8642

Author: astraw

test/_buildbot_doc.sh

@@ -8,8 +8,8 @@ source $TARGET/bin/activate
 echo "removing MPL config dir"
 python -c "import shutil,matplotlib; x=matplotlib.get_configdir(); shutil.rmtree(x)"
 
-echo "calling 'easy_install sphinx'"
-easy_install sphinx
+echo "calling 'easy_install Sphinx==1.0.1'"
+easy_install "Sphinx==1.0.1"
 
 echo "calling 'cd doc'"
 cd doc