A quick google search returned a PHP varient. Transcribing it into perl and extending the functionality:

#!/usr/bin/perl -w

use strict;
use File::Type;

my $file = $0;

print "Pragma: public\n"; # reportedly required
print 'Content-Type: ', File::Type->new()->mime_type($file) || 'applic
+ation/force-download', "\n";
print "Content-Disposition: attachment;filename=$file\n";
print "Content-Transfer-Encoding: binary\n";
print 'Content-Length: ', -s $file, "\n\n";

open(FILE, "$file");
binmode $_ foreach (*FILE, *STDOUT);
print foreach (<FILE>);
close(FILE);
[download]

Verified to work with Apache on Linux.

UPDATE: Removed unnecessary variables