Fix Ubuntu module removal script

From: Devin Heitmueller <devin.heitmueller@gmail.com>

The generated Makefile.media had entries in it's remove list for
Ubuntu that were concatenated together.  Add a space when concatenating
together the various lists (so there is a space between the lists)

Thanks for Mike Krufky <mkrufky@linuxtv.org> for pointing this out and
testing the fix.

Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Index: v4l-dvb/v4l/scripts/make_makefile.pl
===================================================================
--- v4l-dvb.orig/v4l/scripts/make_makefile.pl	2008-11-19 23:29:50.000000000 -0500
+++ v4l-dvb/v4l/scripts/make_makefile.pl	2008-11-19 23:30:08.000000000 -0500
@@ -166,10 +166,10 @@
 	my $filelist;
 
 	while ( my ($dir, $files) = each(%instdir) ) {
-		$filelist .= join(' ', keys %$files);
+		$filelist .= ' '. join(' ', keys %$files);
 	}
 	while ( my ($dir, $files) = each(%obsolete) ) {
-		$filelist .= join(' ', keys %$files);
+		$filelist .= ' ' . join(' ', keys %$files);
 	}
 	$filelist =~ s/\s+$//;