When the test suite encounters a tree mismatch and prints the expected and actual trees, print them in a stable sorted order for easier visual comparison.
When the test suite encounters a tree mismatch and prints the expected and
actual trees, print them in a stable sorted order for easier visual
comparison.

* subversion/tests/cmdline/svntest/tree.py
  (SVNTreeNode.__cmp__): New method.
  (node_is_greater): Delete, as this function was unused. The new
    SVNTreeNode.__cmp__() is a functional replacement for it anyway.
  (dump_tree): Sort the children before displaying them.

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