Update copyrights.

From-SVN: r24469

gcc/config/pa/pa.c

 /* Subroutines for insn-output.c for HPPA.
-   Copyright (C) 1992, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1992, 93-98, 1999 Free Software Foundation, Inc.
    Contributed by Tim Moore (moore@cs.utah.edu), based on sparc.c
 
 This file is part of GNU CC.

gcc/config/pa/pa.md

 ;;- Machine description for HP PA-RISC architecture for GNU C compiler
-;;   Copyright (C) 1992, 93-97, 1998 Free Software Foundation, Inc.
+;;   Copyright (C) 1992, 93-98, 1999 Free Software Foundation, Inc.
 ;;   Contributed by the Center for Software Science at the University
 ;;   of Utah.