AutoSplit will fail to create an index for files whose modification time is 0
because its default time for a non-existent index is 1.  Set this default time
to -1 instead.

--- perl-5.16.1/cpan/AutoLoader/lib/AutoSplit.pm.orig	2012-02-14 22:44:36.000000000 -0600
+++ perl-5.16.1/cpan/AutoLoader/lib/AutoSplit.pm	2015-09-09 19:59:22.208708921 -0500
@@ -361,7 +361,7 @@
     my($al_idx_file) = catfile($autodir, $modpname, $IndexFile);
 
     if ($check_mod_time){
-	my($al_ts_time) = (stat("$al_idx_file"))[9] || 1;
+	my($al_ts_time) = (stat("$al_idx_file"))[9] || -1;
 	if ($al_ts_time >= $pm_mod_time and
 	    $al_ts_time >= $self_mod_time){
 	    print "AutoSplit skipped ($al_idx_file newer than $filename)\n"