Doxygen: Update the configuration file.
Doxygen: Update the configuration file.

* doc/doxygen.conf: Run 'doxygen -u', adding new configuration tags.

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