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/test_resource_copy_run.in

 #!@SHELL@
+test 'x@ENABLE_GRIB@' = xyes || exit 77
 
 @top_builddir@/libtool --mode=execute ${tool_wrap} ./test_resource_copy || exit 1
 #