Bug#469335: xkb-data: sun rules reference nonexistent symbols

["Bernhard R. Link" <brlink@debian.org>]

* Bernhard R. Link <brlink@debian.org> [080608 16:53]:
> The attached patch makes model sun5 work again, at least in layout us.
> I'll see if I can find some other keyboards next weekend to test.

While this patch makes it loadable without errors again, the layout
seems still not correct. But I found the real solution:
Sun type 5 keyboards are now supposed to use the sun6 model, according
to base.xml (and tested with a type 5c us and a type 5 de keyboard):

    <model>
      <configItem>
        <name>sun6</name>
        <description>Sun Type 5/6</description>
        <vendor>Sun Microsystems</vendor>
      </configItem>
    </model>

Perhaps the best solution is just to remove the old sun5 (no idea about
sun4) thus (or make it an alias/copy of the sun6 rule)

Hochachtungsvoll,
	Bernhard R. Link