tests: added subfolder for test executions without correctness check

test/executeOnly/Makefile.am

+
+TESTS = Splitsel.test

test/executeOnly/README

+11.10.2019 Oliver Heidmann
+
+Test inside this folder do not contain any special tests for correctness of the operator
+and only checks wheather a general execution of this operator runs withough generating an
+error

test/executeOnly/Splitsel.test.in

+#! @BASH@
+echo 0..1
+
+test -n "$CDO"      || CDO="@abs_top_builddir@/src/cdo $CDO_DEBUG"
+
+FORMAT="-f grb -b 32"
+STATS="splitsel"
+
+NTEST=1
+CDOTEST=""
+
+for STAT in $STATS; do
+    echo "Running test: $NTEST - splitsel $CDOTEST"
+    $CDO $FORMAT ${STAT},1 -topo out.splitsel.test.file
+    test $? -eq 0 && echo "ok $NTEST - $CDOTEST"
+    test $? -eq 0 || echo "not ok $NTEST - $CDOTEST"
+
+done
+rm -rf *out.splitsel.test.file