vlist.h: update from cdi-pio

src/vlist.h

 #ifndef _VLIST_H
 #define _VLIST_H
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <stddef.h>  /* size_t */
 
+#ifdef USE_MPI
+#include <mpi.h>
+#endif
+
 #ifndef _CDI_LIMITS_H
 #  include "cdi_limits.h"
 #endif
@@ -44,6 +52,14 @@ typedef struct
 levinfo_t;
 
 
+typedef struct
+{
+  int      rank;
+  int      offset;
+  int      chunk;
+}
+deco_t;
+
 typedef struct
 {
   int ens_index;
@@ -86,6 +102,10 @@ typedef struct
   int         complevel;    // compression level
   ensinfo_t  *ensdata;      /* Ensemble information */
   cdi_atts_t  atts;
+  int         iorank;
+  int         decoSize;
+  deco_t     *deco;
+
 }
 var_t;
 
@@ -125,6 +145,12 @@ int      vlistHasTime(int vlistID);
 int      vlistDelAtts(int vlistID, int varID);
 int      vlistCopyVarAtts(int vlistID1, int varID_1, int vlistID2, int varID_2);
 
+#ifdef USE_MPI
+void     vlistUnpack(char * buffer, int bufferSize, int * pos, int, MPI_Comm comm);
+void     vlistDefVarDeco ( int vlistID, int varID, int decoSize, 
+                              deco_t * deco );
+#endif
+
 /*      vlistDefVarValidrange: Define the valid range of a Variable */
 void    vlistDefVarValidrange(int vlistID, int varID, const double *validrange);