Backing out due to red on btek (Seamonkey). btek does not have File::Spec installed?

config/make-jars.pl

@@ -80,7 +80,9 @@ my $jarDir = $chromeDir;
 if (defined($::opt_j)) {
     $jarDir = $::opt_j;
 }
-$jarDir = _moz_rel2abs($jarDir, 1);
+if ($jarDir !~ /^\//) {
+    $jarDir = getcwd() . '/' . $jarDir;
+}
 
 my $verbose = 0;
 if (defined($::opt_v)) {
@@ -216,9 +218,8 @@ sub JarIt
 {
     my ($destPath, $jarPath, $jarfile, $args, $overrides) = @_;
     my $oldDir = cwd();
+    my $jarchive = $jarPath . '/' . $jarfile . '.jar';
     chdir("$destPath/$jarfile");
-    my $jarchive = File::Spec->abs2rel(
-      File::Spec->catfile($jarPath, $jarfile.'.jar'));
 
     if ("$fileformat" eq "flat" || "$fileformat" eq "symlink") {
         unlink($jarchive) if ( -e $jarchive);