Add DISABLE_MODULE test

tests/test_disable_module/Makefile

+export PROJECT = test_disable_module
+include ../Makefile.tests_common
+
+DISABLE_MODULE += auto_init
+
+include $(RIOTBASE)/Makefile.include

tests/test_disable_module/main.c

+/*
+ * Copyright (C) 2014 René Kijewski <rene.kijewski@fu-berlin.de>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @ingroup tests
+ * @{
+ *
+ * @file
+ * @brief    Test whether DISABLE_MODULE works.
+ *
+ * @author   René Kijewski <rene.kijewski@fu-berlin.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+    puts("Start.");
+
+#   ifdef MODULE_AUTO_INIT
+    puts("-ERROR: MODULE_AUTO_INIT present!");
+#   else
+    puts("+OK: MODULE_AUTO_INIT absent.");
+#   endif
+
+    puts("Done.");
+    return 0;
+}