Provide definitions that are missing on Solaris.

This patch should be sent upstream.

--- rtorrent-0.9.6/src/utils/directory.h.orig 2015-09-07 13:12:40.000000000 -0700

+++ rtorrent-0.9.6/src/utils/directory.h 2015-09-16 09:22:02.113830073 -0700

@@ -41,6 +41,32 @@

#include <vector>

#include <inttypes.h>

+#if defined(sun) || defined(__sun) || defined(__sun__)

+extern "C" {

+ enum

+ {

+ DT_UNKNOWN = 0,

+#define DT_UNKNOWN DT_UNKNOWN

+ DT_FIFO = 1,

+#define DT_FIFO DT_FIFO

+ DT_CHR = 2,

+#define DT_CHR DT_CHR

+ DT_DIR = 4,

+#define DT_DIR DT_DIR

+ DT_BLK = 6,

+#define DT_BLK DT_BLK

+ DT_REG = 8,

+#define DT_REG DT_REG

+ DT_LNK = 10,

+#define DT_LNK DT_LNK

+ DT_SOCK = 12,

+#define DT_SOCK DT_SOCK

+ DT_WHT = 14

+#define DT_WHT DT_WHT

+ };

+};

+#endif

+

namespace utils {

struct directory_entry {