Don't publish every build on January 1st, and don't not publish builds at all if we've wrapped to the next year but weren't running on January 1. Also remove some unneeded copied code.

tools/tinderbox/post-mozilla-rel.pl

@@ -554,12 +554,11 @@ sub cacheit {
   TinderUtils::print_log "c_hour = $c_hour\n";
   TinderUtils::print_log "c_yday = $c_yday\n";
   TinderUtils::print_log "last_build_day = $last_build_day\n";
-  if (($c_hour > $target_hour) && 
-      (($last_build_day < $c_yday) || ($c_yday == 0))) {
-        return 1;
-      } else {
-	return 0;
-      }
+  if (($c_hour > $target_hour) && ($last_build_day != $c_yday)) {
+    return 1;
+  } else {
+    return 0;
+  }
 }
 
 sub reportRelease {
@@ -595,12 +594,7 @@ sub returnStatus{
 
 sub PreBuild {
     my $last_build_day;
-    my ($c_hour,$c_day,$c_month,$c_year,$c_yday) = (localtime(time))[2,3,4,5,7];
-    $c_year       = $c_year + 1900; # ftso perl
-    $c_month      = $c_month + 1; # ftso perl
-    $c_hour       = pad_digit($c_hour);
-    $c_day        = pad_digit($c_day);
-    $c_month      = pad_digit($c_month);
+    my ($c_hour,$c_yday) = (localtime(time))[2,7];
 
     if ( -e "last-built") {
 	($last_build_day) = (localtime((stat "last-built")[9]))[7];