What determines the order in which VBS build modules?

[Miles Lane <miles megapathdsl net>]

This appears to be the order in which rebuild.sh is rebuilding
modules:

Skipping esound ...
Skipping gtk-doc ...
Skipping glib ...
Skipping gob ...
Skipping linc ...
Skipping atk ...
Skipping gnome-common ...
Skipping pango ...
Skipping libIDL ...
Skipping ORBit2 ...
Skipping gnome-xml ...
Skipping intltool ...
Skipping bonobo-activation ...
Skipping gtk+ ...
Skipping gconf ...
Skipping libart_lgpl ...
Skipping libzvt ...
Skipping libbonobo ...
Skipping gnome-mime-data ...
Skipping gnome-vfs ...
Skipping libglade ...
Skipping libxslt ...
Skipping libgnome ...
Skipping libgnomecanvas ...
Skipping libbonoboui ...
Skipping libgnomeui ...

But this order differs from the order in ~/bin/modules.sh:

MODULES='
        xml-i18n-tools
        gnome-common
        gtk-doc
        audiofile
        esound
        glib
        libunicodexml-i18n-tools
        gtk+
        ORBit
        gob
        gnome-xml
        libgtop
        oaf
        gnet
        gnome-http
        gconf
        imlib
        gnome-libs
        gdk-pixbuf
        gnome-print
        bonobo
        gnome-vfs
        control-center
        libglade
        gal
        gtkhtml
        gnome-core
        gnome-applets
        pong
        grapevine
        eog
        medusa
        ammonite
        librsvg
        eel
        nautilus
        gnome-utils
'

Lastly, there appear to me modules in the modules.sh
file that are not ready to build.  For example, I tried
to "modmake.sh xml-i18n-tools" and received an error stating
that xml-i18n-tools wasn't in the repository.

Thanks for your help!

	Miles