. release fixes

. added OPENCT ioctl to at driver, which returns the number of times
  a device is opened. if it's not opened exactly once, new partition info
  will not be read in (at the next open after this close). included
  this check in autopart.

include/sys/ioc_disk.h

@@ -12,5 +12,6 @@
 #define DIOCGETP	_IOR('d', 4, struct partition)
 #define DIOCEJECT	_IO ('d', 5)
 #define DIOCTIMEOUT	_IOW('d', 6, int)
+#define DIOCOPENCT	_IOR('c', 7, int)
 
 #endif /* _S_I_DISK_H */