It is not on my 10.2 M030 server...
Unix command:
find $WT_HOME/ -name xconf.dtd -print
returns no results, whereas:
find $WT_HOME/ -name wt.properties -print
returns results, so I know the command works.
find $WT_HOME/ -name wt.properties -print
$WT_HOME/codebase/wnc/CommonCore/wt.properties
$WT_HOME/codebase/wt.properties