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Tag lists

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Tag list helper functions

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<para>
These utility functions implement some basic functions that make life easier 
dealing with GPE tag-value lists.
</para>

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<para>

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<!-- ##### FUNCTION gpe_tag_list_free ##### -->
<para>
You guessed it: This function frees a complete list of tags.
</para>

@tags: list to free


<!-- ##### FUNCTION gpe_tag_list_prepend ##### -->
<para>
Adds a new tag-value pair to the head of a list.
</para>

@data: Current list or NULL.
@tag: Tag identifying the new pair in the list.
@value: String value to be stored.
@Returns: New head of the complete list.


