Fix reference in darwin-ldouble.c

[Geoffrey Keating]

I was looking up this paper and noticed the reference was wrong.

Tested with 'make quickstrap'.

-- 
- Geoffrey Keating <geoffk@apple.com>

===File ~/patches/gcc-longdouble-reference.patch============
Index: ChangeLog
===================================================================
RCS file: /cvs/gcc/gcc/gcc/ChangeLog,v
retrieving revision 2.4386
diff -u -p -u -p -r2.4386 ChangeLog
--- ChangeLog	8 Jul 2004 17:40:11 -0000	2.4386
+++ ChangeLog	8 Jul 2004 21:13:49 -0000
@@ -1,3 +1,8 @@
+2004-07-08  Geoffrey Keating  <geoffk@apple.com>
+
+	* config/rs6000/darwin-ldouble.c: Correct reference
+	to the Linnainmaa paper.
+
 2004-07-08  Roger Sayle  <roger@eyesopen.com>
 
 	* builtins.c (fold_builtin_strcpy): Merge functionality from
Index: config/rs6000/darwin-ldouble.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/rs6000/darwin-ldouble.c,v
retrieving revision 1.6
diff -u -p -u -p -r1.6 darwin-ldouble.c
--- config/rs6000/darwin-ldouble.c	7 Feb 2004 03:06:46 -0000	1.6
+++ config/rs6000/darwin-ldouble.c	8 Jul 2004 21:13:49 -0000
@@ -35,7 +35,7 @@ Software Foundation, 59 Temple Place - S
    754 Floating-Point Arithmetic" by W. Kahan, February 26, 1987.  An
    alternative published reference is "Software for Doubled-Precision
    Floating-Point Computations", by Seppo Linnainmaa, ACM TOMS vol 7
-   no 3, September 1961, pages 272-283.  */
+   no 3, September 1981, pages 272-283.  */
 
 /* Each long double is made up of two IEEE doubles.  The value of the
    long double is the sum of the values of the two parts.  The most
============================================================