Annotate usage of stream record member fields.

* Eliminate unused fields.

src/cdi_int.h

@@ -108,30 +108,23 @@ char *strdup(const char *s);
 
 typedef struct
 {
-  void     *buffer;
-  size_t    buffersize;
-  off_t     position;
-  int       recsize;
-  int       size;
-  int       dataread;
-  int       param;
-  int       level;
-  int       date;
-  int       time;
-  int       gridID;
-  int       zaxisID;
-  int       used;
-  int       nrec;
-  int       varID;
-  int       levelID;
-  int       recid;
-  int       prec;
-  int       sec0[2];
-  int       sec1[1024];
-  int       sec2[4096];
-  int       sec3[2];
-  int       sec4[512];
-  void     *exsep;
+  void     *buffer;             /* gribapi, cgribex */
+  size_t    buffersize;         /* gribapi, cgribex */
+  off_t     position;           /* ieg */
+  int       param;              /* srv */
+  int       level;              /* ext, srv */
+  int       date;               /* ext, srv */
+  int       time;               /* srv */
+  int       gridID;             /* ieg, ext */
+  int       varID;              /* ieg */
+  int       levelID;            /* ieg  */
+  int       prec;               /* ext, srv */
+  int       sec0[2];            /* cgribex */
+  int       sec1[1024];         /* cgribex */
+  int       sec2[4096];         /* cgribex */
+  int       sec3[2];            /* cgribex */
+  int       sec4[512];          /* cgribex */
+  void     *exsep;              /* ieg, ext, srv */
 }
 Record;
 

src/stream_record.c

@@ -98,21 +98,16 @@ void cdiInitRecord(stream_t *streamptr)
 {
   streamptr->record = (Record *) malloc(sizeof(Record));
 
-  streamptr->record->used       = 0;
-  streamptr->record->nrec       = 0;
-  streamptr->record->dataread   = 1;
   streamptr->record->param      = 0;
   streamptr->record->level      = 0;
   streamptr->record->date       = 0;
   streamptr->record->time       = 0;
   streamptr->record->gridID     = 0;
-  streamptr->record->zaxisID    = 0;
   streamptr->record->buffer     = NULL;
   streamptr->record->buffersize = 0;
   streamptr->record->position   = 0;
   streamptr->record->varID      = 0;
   streamptr->record->levelID    = CDI_UNDEFID;
-  streamptr->record->recid      = 0;
 }
 
 
@@ -193,7 +188,6 @@ void streamDefRecord(int streamID, int varID, int levelID)
   streamptr->record->date     = streamptr->tsteps[tsID].taxis.vdate;
   streamptr->record->time     = streamptr->tsteps[tsID].taxis.vtime;
   streamptr->record->gridID   = gridID;
-  streamptr->record->zaxisID  = zaxisID;
   streamptr->record->prec     = vlistInqVarDatatype(vlistID, varID);
 
   switch (streamptr->filetype)