numerous fixes to sysv ipc

some of these definitions were just plain wrong, others based on
outdated ancient "non-64" versions of the kernel interface.

as much as possible has now been moved out of bits/*

these changes break abi (the old abi for these functions was wrong),
but since they were not working anyway it can hardly matter.

include/sys/ipc.h

@@ -11,13 +11,27 @@ extern "C" {
 
 #include <bits/alltypes.h>
 
+#ifdef _GNU_SOURCE
+#define __ipc_perm_key key
+#define __ipc_perm_seq seq
+#endif
+
 #include <bits/ipc.h>
 
+#define IPC_CREAT  01000
+#define IPC_EXCL   02000
+#define IPC_NOWAIT 04000
+
+#define IPC_RMID 0
+#define IPC_SET  1
+#define IPC_STAT 2
+#define IPC_INFO 3
+
+#define IPC_PRIVATE ((key_t) 0)
+
 key_t ftok (const char *, int);
 
 #ifdef __cplusplus
 }
 #endif
 #endif
-
-