Generic GCM:
Introducing a first prototype of XIOS outputs: requires compiling with
"-io xios" flag and having an XIOS library at hand. Corresponding
companion xml files iodef.xml and context_lmdz_physics.xml in the "deftank"
subdirectory. Still some work to do concerning the XIOS calendar (definition
of an initial date and month number and lenght).
EM