* New functions
- Add a xbt_heap_update function, to avoid costly xbt_heap_remove+xbt_heap_insert use
- Add a xbt wrapper for simcall_mutex_trylock (asked in [#17878])
+ - Add two new log appenders : rollfile and splitfile. Patch by Fabien Chaix.
-- $date Da SimGrid team <simgrid-devel@lists.gforge.inria.fr>