Use #include <foo.h> instead of #include "foo.h" in most cases.

We rely on the include path to find many of these headers.  It
especially doesn't make sense to use #include "foo.h" for headers
in the top-level include directory.

plugins/python/python_plugin_common.c

@@ -24,8 +24,8 @@
 #include "python_plugin_common.h"
 #include "sudo_python_module.h"
 
-#include "sudo_queue.h"
-#include "sudo_conf.h"
+#include <sudo_queue.h>
+#include <sudo_conf.h>
 
 #include <limits.h>
 #include <string.h>