* Kill the setset data container: MC don't use it anymore.
* Kill the queue data container: it made more sense with GRAS.
* Kill the xbt_peer_t data type: it's useless without GRAS.
+ * Kill rm_cb feature of config sets: it was never useful.
* New functions:
- xbt_dynar_sort_strings(), when the content is char*
- xbt_str_parse_int / xbt_str_parse_double, wrapping strtol/strtod
