* tree.py (compare_trees): when printing unequal tree-nodes, label   them -clearly-.  thanks to gstein for complaining about this.  :-)
* tree.py (compare_trees): when printing unequal tree-nodes, label
  them -clearly-.  thanks to gstein for complaining about this.  :-)

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion