Add clear functions to table and trie.

include/table.h

@@ -134,6 +134,11 @@ libab_result libab_table_put(libab_table* table, const char* string,
  * @param parent a valid reference to a parent table.
  */
 void libab_table_set_parent(libab_table* table, libab_ref* parent);
+/**
+ * Clears the table.
+ * @param table the table to clear.
+ */
+void libab_table_clear(libab_table* table);
 /**
  * Frees the resources allocated by the
  * given table.

include/trie.h

@@ -60,6 +60,7 @@ libab_result libab_trie_put(libab_trie* trie, const char* key, void* value);
 const ll* libab_trie_get(const libab_trie* trie, const char* key);
 int libab_trie_foreach(const libab_trie* trie, void* data, compare_func compare,
                        foreach_func foreach);
+void libab_trie_clear(libab_trie* trie);
 void libab_trie_free(libab_trie* trie);
 
 #endif