tar: remove unused macros

* src/create.c (UINTMAX_TO_CHARS): Remove; no longer used.
* src/tar.c (LOW_DENSITY_NUM, MID_DENSITY_NUM, HIGH_DENSITY_NUM):
Likewise.
* src/incremen.c (DIR_IS_NEW): Comment out; not used.
Mark this with a FIXME, since it looks like it should be used.

src/create.c

@@ -219,7 +219,7 @@ to_base256 (int negative, uintmax_t value, char *where, size_t size)
 #define MINOR_TO_CHARS(val, where) minor_to_chars (val, where, sizeof (where))
 #define MODE_TO_CHARS(val, where) mode_to_chars (val, where, sizeof (where))
 #define UID_TO_CHARS(val, where) uid_to_chars (val, where, sizeof (where))
-#define UINTMAX_TO_CHARS(val, where) uintmax_to_chars (val, where, sizeof (where))
+
 #define UNAME_TO_CHARS(name,buf) string_to_chars (name, buf, sizeof(buf))
 #define GNAME_TO_CHARS(name,buf) string_to_chars (name, buf, sizeof(buf))
 

src/incremen.c

@@ -43,7 +43,7 @@ enum children
 #define DIR_IS_INITED(d) ((d)->flags & DIRF_INIT)
 #define DIR_IS_NFS(d) ((d)->flags & DIRF_NFS)
 #define DIR_IS_FOUND(d) ((d)->flags & DIRF_FOUND)
-#define DIR_IS_NEW(d) ((d)->flags & DIRF_NEW)
+/* #define DIR_IS_NEW(d) ((d)->flags & DIRF_NEW) FIXME: not used */
 #define DIR_IS_RENAMED(d) ((d)->flags & DIRF_RENAMED)
 
 #define DIR_SET_FLAG(d,f) (d)->flags |= (f)

src/tar.c

@@ -1142,20 +1142,6 @@ add_file_id (const char *filename)
   file_id_list = p;
 }
 
-/* Default density numbers for [0-9][lmh] device specifications */
-
-#ifndef LOW_DENSITY_NUM
-# define LOW_DENSITY_NUM 0
-#endif
-
-#ifndef MID_DENSITY_NUM
-# define MID_DENSITY_NUM 8
-#endif
-
-#ifndef HIGH_DENSITY_NUM
-# define HIGH_DENSITY_NUM 16
-#endif
-
 static void
 update_argv (const char *filename, struct argp_state *state)
 {