fcntl.h should make availabel the mode constants from sys/stat.h

also remove some legacy nonsense that crept in.

include/fcntl.h

@@ -36,6 +36,24 @@ int posix_fallocate(int, off_t, off_t);
 #define SEEK_CUR 1
 #define SEEK_END 2
 
+#ifndef S_IRUSR
+#define S_ISUID 04000
+#define S_ISGID 02000
+#define S_ISVTX 01000
+#define S_IRUSR 0400
+#define S_IWUSR 0200
+#define S_IXUSR 0100
+#define S_IRWXU 0700
+#define S_IRGRP 0040
+#define S_IWGRP 0020
+#define S_IXGRP 0010
+#define S_IRWXG 0070
+#define S_IROTH 0004
+#define S_IWOTH 0002
+#define S_IXOTH 0001
+#define S_IRWXO 0007
+#endif
+
 #ifdef __cplusplus
 }
 #endif