There has to be a better way than this… but it does work (at least for revisions 11 through 141):

for rev in `seq 11 141`;
do
  if [ -z "`bzr diff -r\`expr $rev - 1\`..$rev|diffstat -p0 -l|grep ^tests`" ];
  then
    (bzr log -r$rev --forward --log-format=long
     | sed -e 's/^  //;
       /^------------------------------------------------------------/d;
       /^revno:.*$/d; /^committer:.*/d; /^branch nick:/d;
       /^timestamp: /d; /^message:/d';
    echo;
    echo;
    bzr diff -r`expr $rev - 1`..$rev --prefix a/storage/innodb_plugin/:b/storage/innodb_plugin/) > patches/$rev.patch ;
    echo $rev.patch >> patches/series;
  fi;
done