xbps-bin: add new action "repo-list".

--HG--
extra : convert_revision : e0d5fce9503c6544e8ceec56864560b170c0e8c8

utils/plist_utils.h

@@ -87,6 +87,15 @@ xbps_find_string_in_array(prop_array_t, const char *);
 void
 xbps_list_pkgs_in_dict(prop_dictionary_t, const char *);
 
+/*
+ * Lists all string values in an array.
+ *
+ * Arguments:
+ * 	- prop_array_t: array where to search on.
+ */
+void
+xbps_list_strings_in_array(prop_array_t);
+
 /*
  * Registers a repository specified by an URI into the pool.
  *