Build System
* Require g++ v4.7 at least to not speak prehistorical C++.
* Require Boost 1.48 (for signal2 component).
+ * Java must be version 7 at least when activated.
* Tracing is now always enabled (no way to turn it out)
* Remove GTNetS. It was not working anyway.
* Move headers around to sort them out on installed systems:
- 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.
+ - xbt_dirname and xbt_basename for non-POSIX systems
MC
* The model checker now runs as a separate process.
* The model checker runs must now be launched with the new simgrid-mc program.