Relocate source files to an src/ subdirectory

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

plugins/hwclock.c

@@ -23,9 +23,9 @@
 
 #include <lite/lite.h>
 
-#include "../finit.h"
-#include "../helpers.h"
-#include "../plugin.h"
+#include "finit.h"
+#include "helpers.h"
+#include "plugin.h"
 
 static void save(void *UNUSED(arg))
 {