Consolidation with CDI-PIO (develop)

Generally, this is !11 (merged) rebased onto the develop branch.

This is the first develop-based version accepted by the Buildbot of ICON: https://buildbot.dkrz.de/grid?branch=m300488/cdi-pio-2-integration

tests/cksum_write.c

@@ -133,7 +133,7 @@ main(int argc, char *argv[])
   {
     nmiss = 0
   };
-  double *lons, *lats, *restrict var[nvars], *levs, mscale, mrscale;
+  double *lons, *lats, *restrict var[nvars], mscale, mrscale;
   size_t varSize[nvars];
   const char *varName[nvars] = { "varname1", "varname2" };
 #ifndef TEST_CHUNK_WRITE
@@ -198,8 +198,6 @@ main(int argc, char *argv[])
   for (size_t i = 0; i < (size_t) nlon; ++i) lons[i] = ((double) (i * 360)) / nlon;
   lats = (double *) malloc((size_t) nlat * sizeof(lats[0]));
   for (size_t i = 0; i < (size_t) nlat; ++i) lats[i] = ((double) (i * 180)) / nlat - 90.0;
-  levs = (double *) malloc((size_t) nlev * sizeof(levs[0]));
-  for (size_t i = 0; i < (size_t) nlev; ++i) levs[i] = 101300 - floor(3940.3 * (exp(2.3579 * (double) (i) / (nlev - 1)) - 1.0));
 
   varSize[0] = (size_t) nlon * (size_t) nlat;
   varSize[1] = (size_t) nlon * (size_t) nlat * (size_t) nlev;
@@ -216,7 +214,12 @@ main(int argc, char *argv[])
 
   // Create a pressure level Z-axis
   zaxisID[1] = zaxisCreate(ZAXIS_PRESSURE, nlev);
-  zaxisDefLevels(zaxisID[1], levs);
+  {
+    double *levs = (double *) malloc((size_t) nlev * sizeof(levs[0]));
+    for (size_t i = 0; i < (size_t) nlev; ++i) levs[i] = 101300 - floor(3940.3 * (exp(2.3579 * (double) (i) / (nlev - 1)) - 1.0));
+    zaxisDefLevels(zaxisID[1], levs);
+    free(levs);
+  }
 
   /* add uuids to zaxis and grid */
   {
@@ -381,7 +384,6 @@ main(int argc, char *argv[])
   zaxisDestroy(zaxisID[0]);
   zaxisDestroy(zaxisID[1]);
   gridDestroy(gridID);
-  free(levs);
   free(lats);
   free(lons);
   return 0;