Bundle <sys/queue.h> from NetBSD

We are bundling this to allow building on musl-based systems since musl
does not include <sys/queue.h>.

src/librc/librc-daemon.c

@@ -28,6 +28,7 @@
  * SUCH DAMAGE.
  */
 
+#include "queue.h"
 #include "librc.h"
 
 #if defined(__linux__) || (defined (__FreeBSD_kernel__) && defined(__GLIBC__))

src/librc/librc-depend.c

@@ -30,6 +30,7 @@
 
 #include <sys/utsname.h>
 
+#include "queue.h"
 #include "librc.h"
 
 #define GENDEP          RC_LIBEXECDIR "/sh/gendepends.sh"

src/librc/librc-misc.c

@@ -28,6 +28,7 @@
  * SUCH DAMAGE.
  */
 
+#include "queue.h"
 #include "librc.h"
 
 bool

src/librc/librc-stringlist.c

@@ -28,6 +28,7 @@
  * SUCH DAMAGE.
  */
 
+#include "queue.h"
 #include "librc.h"
 
 RC_STRINGLIST *

src/librc/librc.c

@@ -30,6 +30,7 @@
 
 const char librc_copyright[] = "Copyright (c) 2007-2008 Roy Marples";
 
+#include "queue.h"
 #include "librc.h"
 #ifdef __FreeBSD__
 #  include <sys/sysctl.h>

src/librc/rc.h.in

@@ -27,7 +27,6 @@
 #define __RC_H__
 
 #include <sys/types.h>
-#include <sys/queue.h>
 #include <stdbool.h>
 #include <stdio.h>