Several "unittest" files : Ensure that the configure result is used when compiling them.

unittest/examples/no_plan.t.c:
  Ensure that the "configure" result is used when compiling this module.
unittest/examples/skip_all.t.c:
  Ensure that the configure result is used when compiling this module.
unittest/examples/todo.t.c:
  Ensure that the configure result is used when compiling this module.
unittest/mytap/t/basic.t.c:
  Ensure that the configure result is used when compiling this module.

unittest/examples/no_plan.t.c

 
+#include "my_config.h"
+
 #include <stdlib.h>
 #include <tap.h>
 

unittest/examples/skip_all.t.c

 
+#include "my_config.h"
+
 #include <stdlib.h>
 #include <tap.h>
 

unittest/examples/todo.t.c

 
+#include "my_config.h"
+
 #include <stdlib.h>
 #include <tap.h>
 

unittest/mytap/t/basic.t.c

 
+#include "my_config.h"
+
 #include <stdlib.h>
 #include <tap.h>