Pref walking

[Eric Polino]

Would there be any objections to me writing a function in
libpurple/prefs that returns the children of a given pref.  I
essentially am going to want to do that in gntsound.

/*
 * Returns a list of children for a pref
 *
 * @param pref The parent pref
 * @return A list of strings denoting the names of the children, NULL
if no children or pref doesn't exist.
 *
 */

GList *
purple_prefs_get_children(const char * pref);

-- 
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-- 
"...indexable arrays, which may be thought of as functions whose
domains are isomorphic to contiguous subsets of the integers."
--Haskell 98 Library Report