Cleaning up orphaned SVN locks

I'm running an earlier version of Subversion which seems to be creating orphan locks on files

# To unlock a locked file
Unix> svn status -u # shows files locked by any owner
# note you need a fullpath to the filename to unlock it
Unix> svn unlock --force ~/versic/local/work/<dfII-lib-dir>/<cell-name>/<view-name>/<locked-filename>