TODO:

Syscall: rename, link, symlink (modify path walk!), remote alloc for files distributed page cache).
	file descriptor support only partially the multi-thread case... We need to set a GC-counter at the 
	lookup check uid, mode, right ...
	file delete: check right...
	fremote structure...

- File data distribution...

- Simplify the scheduler... Also fix RPC ugly manipulation of scheduler flags

- RPC : 	
	check cid before when calling remote_fifo_put...

- There is two functions for the same purpose : ppm_ppn2vma and pmm_ppn2vma (ppm != pmm) !!!
	Only the second that support any ppn, the first support only local ppn

- cpu-remote.h: avoid disabling irqs...

- optimimize memcpy and remote_memcpy in case of not aligned copy ?

- Make the com. algorithm independent of the hardware (no coherence, no shared mem... see multi kernel)

- FIX: void pmm_cache_flush_raddr func

- chech/give a type for addresse in a cluster, don't transport adresses using uint_t

- Remote thread create: see fixmes in sys_thread_creat, task.c

- FIXME: rename as cpu_strlen_uspace

- FIXME: if we send an empty path (not a NULL but an empty path) to the chdir syscall what will happen (what errror ro return) 


TOEXPLORE:
- alarm manager could be ameliorated with relative time techinique rather than moving all the alarms at a new alamr ?
