Add missing VS project files, generated by script
diff --git a/scripts/update_vs_apps.pl b/scripts/update_vs_apps.pl
new file mode 100755
index 0000000..530f7b2
--- /dev/null
+++ b/scripts/update_vs_apps.pl
@@ -0,0 +1,63 @@
+#!/usr/bin/perl
+
+use warnings;
+use strict;
+
+my $vs6_dir = "../visualc/VS6";
+my $vs6_ext = "dsp";
+my $vs6_template_file = "data_files/vs6-app-template.$vs6_ext";
+
+my $vsx_dir = "../visualc/VS2010";
+my $vsx_ext = "vcxproj";
+my $vsx_template_file = "data_files/vs2010-app-template.$vsx_ext";
+
+exit( main() );
+
+sub slurp_file {
+    my ($filename) = @_;
+
+    local $/ = undef;
+    open my $fh, '<', $filename or die "Could not read $filename\n";
+    my $content = <$fh>;
+    close $fh;
+
+    return $content;
+}
+
+sub gen_app {
+    my ($path, $template, $dir, $ext) = @_;
+
+    $path =~ s!/!\\!g;
+    (my $appname = $path) =~ s/.*\\//;
+
+    my $content = $template;
+    $content =~ s/<PATHNAME>/$path/g;
+    $content =~ s/<APPNAME>/$appname/g;
+
+    open my $app_fh, '>', "$dir/$appname.$ext";
+    print $app_fh $content;
+    close $app_fh;
+}
+
+sub get_app_list {
+    my $app_list = `cd ../programs && make list`;
+    die "make list failed: $!\n" if $?;
+
+    return split /\s+/, $app_list;
+}
+
+sub main {
+    -d $vs6_dir || die "VS6 directory not found: $vs6_dir\n";
+    -d $vsx_dir || die "VS2010 directory not found: $vsx_dir\n";
+
+    my $vs6_tpl = slurp_file( $vs6_template_file );
+    my $vsx_tpl = slurp_file( $vsx_template_file );
+
+    for my $app ( get_app_list() ) {
+        printf "$app\n";
+        gen_app( $app, $vs6_tpl, $vs6_dir, $vs6_ext );
+        gen_app( $app, $vsx_tpl, $vsx_dir, $vsx_ext );
+    }
+
+    return 0;
+}