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.

lib/util/pw_dup.c

@@ -34,7 +34,7 @@
 #include <string.h>
 #include <pwd.h>
 
-#include "sudo_compat.h"
+#include <sudo_compat.h>
 
 #define PW_SIZE(name, size)				\
 do {							\