Expire under SysV on a Tahoe.

[Mike Van Pelt]

I finally got expire working!  As Mark Edwards of Pacific Bell pointed
out, the "System V" on the Tahoe has Berkeley directories.  I found
that the following additions to the defs.h editing in localize.sh stuff
fixes expire, the "L" command in vnews, and probably a bunch of other
things.

/MKDIRSUB/s;/\* ;;
/READDIR/s;/\* ;;
/RENAMESUB/s;/\* ;;
i
#define HP9K5             /* Berkeley file system on USG? */