Bug report from Ralf on UNIX port where the S_IR* constants were not

defined.

c/src/lib/libmisc/untar/untar.c

@@ -17,6 +17,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <sys/stat.h>
 #include <fcntl.h>
 #include "untar.h"
 

c/src/libmisc/untar/untar.c

@@ -17,6 +17,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <sys/stat.h>
 #include <fcntl.h>
 #include "untar.h"
 

cpukit/libmisc/untar/untar.c

@@ -17,6 +17,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <sys/stat.h>
 #include <fcntl.h>
 #include "untar.h"