fix copyright notice for the math lib
diff --git a/COPYRIGHT b/COPYRIGHT
index 73887f2..814cabd 100644
--- a/COPYRIGHT
+++ b/COPYRIGHT
@@ -9,11 +9,15 @@
version was heavily modified in Spring 2006 by Rich Felker in the
interests of size, simplicity, and namespace cleanliness.
-Most of the math library code (src/math/*) is Copyright © 1993 Sun
-Microsystems, Inc. Some files are Copyright © 2003 Steven G. Kargl and
-labelled as such. All have been licensed under extremely permissive
-terms which are compatible with the GNU LGPL. See the comments in the
-individual files for details.
+Most of the math library code (src/math/* and src/complex/*) is
+Copyright © 1993,2004 Sun Microsystems or
+Copyright © 2003-2011 David Schultz or
+Copyright © 2003-2009 Steven G. Kargl or
+Copyright © 2003-2009 Bruce D. Evans or
+Copyright © 2008 Stephen L. Moshier
+and labelled as such. All have been licensed under extremely
+permissive terms which are compatible with the GNU LGPL. See the
+comments in the individual files for details.
The implementation of DES for crypt (src/misc/crypt.c) is Copyright ©
1994 David Burren. It is licensed under a BSD license compatible with