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/Makefile.am

@@ -16,6 +16,7 @@ TESTS = \
   test_cksum_nc_chunk \
   test_cksum_service \
   test_f2003 \
+  test_grib_run \
   test_month_adjust \
   test_resource_copy_run \
   test_table_run
@@ -64,6 +65,7 @@ test_PROGRAMS_ = \
   pio_write \
   pio_write_deco2d \
   test_byteswap \
+  test_grib \
   test_month_adjust \
   test_resource_copy \
   test_table
@@ -152,6 +154,8 @@ pio_write_deco2d_parallel_LDADD = $(top_builddir)/src/libcdipio.la $(PPM_CORE_C_
 
 test_byteswap_SOURCES = test_byteswap.c
 
+test_grib_SOURCES = test_grib.c
+
 test_month_adjust_SOURCES = test_month_adjust.c
 
 test_resource_copy_SOURCES = test_resource_copy.c