$Id: Todo,v 1.6 2003/11/03 10:25:48 pmh Exp $

clear(), like quick_clear(), but flushing dirty entries

entry-specific expiry times (see differential-expiry)

Untaint values read from file in _set_options() (see taint)
	Actually, only the header values should be untainted
	Cache entries should be tainted

Make thread-safe

Factor common code out of read() and write()

Improve test suite

Another good idea from Rob Mueller:
> One thing I was wondering about your cache, whenever you access something,
> it seems to move it to the front of the bucket. That's neat from a LRU
> perspective, but couldn't you just use pointers or offsets or something
> instead of having to move the whole data around each time you access it?
	Store pointer table at beginning of bucket, and just swap pointers
	Only move entries when deleting entries
	What about backwards compatibility?
	Will it need defragging?