CMAKE:
* Remove option custom_flags. Now use environment variables CFLAGS
and LDFLAGS.
+ * Enable tracing by default. This modules rocks you should use it.
MSG:
* Add an experimental interface to manipulate VMs. They are mainly
process groups with very few intrinsic semantic, but they should
allow you to build the semantic you want easily.
+ * New function: MSG_host_set_property_value()
Simix:
* Bug fixes around the resource failures: don't let the processes
