* subversion/libsvn_client/diff.c   (unsupported_diff_error, diff_repos_repos, do_diff): Add docstrings.   (diff_wc_wc, diff_repos_wc): Add docstrings, and assert valid input.
* subversion/libsvn_client/diff.c
  (unsupported_diff_error, diff_repos_repos, do_diff): Add docstrings.
  (diff_wc_wc, diff_repos_wc): Add docstrings, and assert valid input.

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