Fix testsuite target dependency setup.

No idea how this worked locally.

tests/d2/CMakeLists.txt

@@ -18,11 +18,11 @@ function(add_testsuite config_name dflags)
     # The DFLAGS environment variable read by LDMD is used because the DMD
     # testsuite build system provides no way to run the test cases with a
     # given set of flags without trying all combinations of them.
-    add_test(NAME ${name}}
+    add_test(NAME ${name}
         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/tests/d2/dmd-testsuite
         COMMAND ${CMAKE_MAKE_PROGRAM} RESULTS_DIR=${outdir} DMD=${ldmd_path} DFLAGS=${dflags} MODEL=${model} quick
-        DEPENDS ${name}_clean
     )
+    set_tests_properties(${name} PROPERTIES DEPENDS ${name}_clean)
 endfunction()
 
 # Would like to specify the "-release" flag for relase builds, but some of the