New unit testing skeleton

ChangeLog

@@ -1,8 +1,9 @@
-2017-11-10 master
+2017-12-19 master
 - Enhancements:
   - Added Spanish translation (contributed by Vicmz)
   - Executor: updated tooltip documentation (issue #676)
   - Systray: warn on duplicate config option systray_name_filter (issue #652)
+  - Changed standard from C99 to C11 to support generic printing for unit tests
 
 2017-11-05 15.3
 - Fixes:

src/util/test.c

@@ -146,8 +146,8 @@ void run_all_tests()
         fprintf(stdout, BLUE "tint2: " RED "%lu" BLUE " out of %lu tests " RED "failed." RESET "\n", failed, count);
 }
 
-TEST(dummy_bad) {
+TEST(dummy) {
     int x = 2;
-    int y = 3;
+    int y = 2;
     ASSERT_EQUAL(x, y);
 }