add_sh_test only creates the test if HAVE_BASH is TRUE.
Therefore we can only call SET_TESTS_PROPERTIES on the created test if
HAVE_BASH is equally true.
tst_h_rdc0 depends on ncdump_tst_netcdf4, which isn't build if HAVE_BASH
isn't true. But CMake errors out with:
-- Bash shell not found; disabling shell script tests.
CMake Error at CMakeLists.txt:1521 (SET_PROPERTY):
SET_PROPERTY given TEST names that do not exist:
tst_h_rdc0
There are also some tests which cdl_do_maps depends on, but it is
also not defined if HAVE_BASH isn't true. CMake errors out with:
CMake Error at examples/CDL/CMakeLists.txt:10 (SET_TESTS_PROPERTIES):
SET_TESTS_PROPERTIES Can not find test to add properties to:
cdl_do_comps
This patch makes these tests conditional, making CMake happy.
