Clear unread news for build system.

install/calculate

@@ -7123,7 +7123,7 @@ sub clearlog{
 	$chroot = $_[0];
 	printmes("  ".gettext('Delete temporary files')); printmes("...");
 
-	system("$data{path} rm -rf $chroot/etc/resolv.conf $chroot/etc/mtab $chroot/var/log/emerge* $chroot/var/log/genkernel.log $chroot/var/log/lastlog $chroot/var/log/prelink.log $chroot/var/log/wtmp $chroot/var/.locks $chroot/var/.svn-src $chroot/usr/calculate/share/distfiles/* $chroot/var/lib/gentoo/news/* $chroot/var/lib/portage/world $chroot/root/.viminfo $chroot/root/.bash_history $chroot/root/.subversion $chroot/var/calculate/tmp/*");
+	system("$data{path} rm -rf $chroot/etc/resolv.conf $chroot/etc/mtab $chroot/var/log/emerge* $chroot/var/log/genkernel.log $chroot/var/log/lastlog $chroot/var/log/prelink.log $chroot/var/log/wtmp $chroot/var/.locks $chroot/var/.svn-src $chroot/usr/calculate/share/distfiles/* $chroot/var/lib/gentoo/news/* $chroot/var/lib/portage/world $chroot/root/.viminfo $chroot/root/.bash_history $chroot/root/.subversion $chroot/var/calculate/tmp/* $chroot/var/lib/gentoo/news/news-gentoo.unread");
 	foreach(
 		"$chroot/var/tmp/portage",
 		"$chroot/tmp",