grim/purple-objects-docbook

cleaned up some output and made the targets that depend on specific sheets depend on the specific sheet
<?xml version="1.0" encoding="UTF-8"?>
<hierarchy>
<objects>
<object name="GObject" type="abstract"/>
<object name="GInterface" type="interface"/>
<object name="GTypePlugin" type="interface"/>
<object name="PurpleObject" type="abstract"/>
<object name="PurplePlugin" type="abstract"/>
<object name="PurplePluginInfo" type="boxed"/>
<object name="PurplePluginActionIface" type="interface"/>
<object name="PurpleNativePlugin" type="concrete"/>
<object name="PurplePerlPlugin" type="concrete"/>
<object name="PurpleTCLPlugin" type="concrete"/>
<object name="PurpleMonoPlugin" type="concrete"/>
</objects>
<relations>
<relation start="GTypePlugin" end="GInterface" type="is-a"/>
<relation start="PurpleObject" end="GObject" type="is-a"/>
<relation start="PurplePlugin" end="PurpleObject" type="is-a"/>
<relation start="PurpleNativePlugin" end="PurplePlugin" type="is-a"/>
<relation start="PurpleNativePlugin" end="GTypePlugin" type="implements"/>
<relation start="PurplePerlPlugin" end="PurplePlugin" type="is-a"/>
<relation start="PurpleTCLPlugin" end="PurplePlugin" type="is-a"/>
<relation start="PurpleMonoPlugin" end="PurplePlugin" type="is-a"/>
<relation start="PurplePlugin" end="PurplePluginInfo" type="has-a"/>
<relation start="PurplePluginActionIface" end="GInterface" type="is-a"/>
</relations>
</hierarchy>
<!--
vi: syntax=xml
-->