Clarified where libcircle is from.

Author: bringhurst

Diff for: COPYING

@@ -38,7 +38,7 @@ IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 
-libcircle is based on a subsystem of LANL-purger/MPI_FTW (file treewalk)
-which can be found at: <http://institutes.lanl.gov/data/software/>
+libcircle is from LANL-purger/MPI_FTW (file treewalk) which can be found at:
+<http://institutes.lanl.gov/data/software/>
 
 LA-CC-06-077