Include test-dbus and test-bus in cmake 'make check' target.

Because test-dbus and test-bus lives in subdirectory dbus/bus, we need
to define make 'check' in top level source directory.

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=73689
Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>

cmake/CMakeLists.txt

@@ -496,6 +496,9 @@ add_subdirectory( dbus )
 add_subdirectory( bus )
 if (DBUS_BUILD_TESTS)
 	add_subdirectory( test )
+	add_custom_target(check
+		COMMAND ctest -R ^test-.*
+	)
 endif (DBUS_BUILD_TESTS)
 add_subdirectory( tools )
 add_subdirectory( doc )

cmake/test/CMakeLists.txt

@@ -172,7 +172,3 @@ FOREACH(FILE ${FILES})
         MESSAGE("FROM: ${FILE}\nTO: ${TARGET}\n")
     ENDIF (CONFIG_VERBOSE)
 ENDFOREACH(FILE)
-
-add_custom_target(check
-    COMMAND ctest -R ^test-.*
-)