IceGrid app descriptor: reopen unnamed sets

not sure if it's a bug or a feature but I was surprised by it.

The IceGrid descriptor parser allows re-opening of unnamed property sets but this leads to duplication of all the properties which were already loaded. The documentation does not seem to address this.

...
<server ...>
    ...
    <properties>
        <property name="Prop1" value="1"/>
    </properties>
    <properties>
        <property name="Prop2" value="2"/>
    </properties>
</server>
...

then calling ">>> server describe xxx" from icegridadmin shows this:

properties
    {
        Prop1 = `1'
        Prop1 = `1'
        Prop2 = `2'
    }

The duplicates of course disappear by the time this gets into the communicator properties, but still, doesn't seem right.

cheers, alex