hooks.c, [...]: Update copyright.

hooks.c, [...]: Update copyright.

	* hooks.c, hooks.h, intl.c, opts.h, prefix.c, tree-gimple.c,
	config/alpha/ev4.md, config/alpha/ev5.md, config/alpha/ev6.md,
	config/alpha/freebsd.h, config/alpha/linux.h,
	config/alpha/netbsd.h, config/alpha/osf5.h,
	config/alpha/vms.h, config/arc/arc.c, config/arc/arc.h,
	config/h8300/h8300-protos.h, config/h8300/h8300.c,
	config/h8300/h8300.h, config/ia64/unwind-ia64.c,
	doc/cppopts.texi: Update copyright.

From-SVN: r96686