TODO for lrzip program

These are some items I (we) would like to get to.

Clean up display when in lzo_compresses function.
currently, it shows both passes for compression tests
making for an ugly display when -v or -vv set.
Personally, I think it's useful and necessary. It
is ugly, however.

Add timers for current running time and for each
data chunk. Could also add timer to _guesstimate_
time to go. Possible method would be to time
chunk compression and divide chunk size by
total file size. Extrapolate time from there.

Add log file option so that output could be
saved for review.

Add test function that would only run lzo_compresses
for a current file without doing any writes.

Update to newest version of lzma SDK.