sys/sem.h: cheat and make all longs use time_t instead

most of the members should be time_t anyway, and time_t has the
correct semantics for "syscall_long", so it works on all archs, even x32.

include/sys/sem.h

@@ -29,19 +29,19 @@ extern "C" {
 
 struct semid_ds {
 	struct ipc_perm sem_perm;
-	long sem_otime;
+	time_t sem_otime;
-	unsigned long __unused1;
+	time_t __unused1;
-	long sem_ctime;
+	time_t sem_ctime;
-	unsigned long __unused2;
+	time_t __unused2;
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 	unsigned short sem_nsems;
-	char __sem_nsems_pad[sizeof(long)-sizeof(short)];
+	char __sem_nsems_pad[sizeof(time_t)-sizeof(short)];
 #else
-	char __sem_nsems_pad[sizeof(long)-sizeof(short)];
+	char __sem_nsems_pad[sizeof(time_t)-sizeof(short)];
 	unsigned short sem_nsems;
 #endif
-	unsigned long __unused3;
+	time_t __unused3;
-	unsigned long __unused4;
+	time_t __unused4;
 };
 
 #define _SEM_SEMUN_UNDEFINED 1