Use <> instead of "" for external header includes

Libraries and system headers should be included with <> instead of "".
This makes a great difference for the automatic dependency tracking.

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

client.c

@@ -27,9 +27,9 @@
 #include <ctype.h>
 #include <getopt.h>
 #include <stdio.h>
+#include <lite/lite.h>
 
 #include "finit.h"
-#include "lite/lite.h"
 
 static int do_send(int cmd, int runlevel)
 {