Port to new memory model:

Communication thread buffer needs to use the global pool,
and not a local pool, since the allocation is done accross
several threads.
Therefore the non thread fixed queue & stack interfaces are moved into
a dedicated header (m-queue)
and remove support for non thread stack & queue into m-buffer
Remove also deprecated policy too.

tests/coverage.h

@@ -125,6 +125,9 @@
 #define M_TR33_CONTRACT(...) (void)0
 #undef  M_TR33_IT_CONTRACT
 #define M_TR33_IT_CONTRACT(...) (void)0
+#undef M_QUEU3_CONTRACT
+#define M_QUEU3_CONTRACT(...) (void)0
+
 /* Overwrite M_UNLIKELY_NOMEM so that it can never fails, to avoid spurious coverage */
 #undef M_UNLIKELY_NOMEM
 #define M_UNLIKELY_NOMEM(...) 0