0.98
Fixed a bug where the data size couldn't be an exact multiple of the size of
each file (1 gig).  Fixed a number of other minor bugs related to that and
added more error checking as well.
Changed the code to support up to 1000 files for the IO test, if each is a
gig then you can test a tera-byte of data.  Changing the code to have more
than 1000 files wouldn't be that difficult to do.

Use the new C++ type conversions.

0.97
I have stopped using cout/cerr and never plan to use them again.  They caused
me significant pain when trying to get it going on an ancient SGI system.

Also changed the code structure a bit to make it cleaner.  One advantage of
this is that there is now a "-x" option to tell bonnie++ to run the same test
a number of times (it's interesting to see the variance in the results).

Now use fflush() after writing each set of results.  This means that killing
the program unexpectedly won't result in results being lost.  Also fixes a
strange bug related to printf() on Linux which I am still looking into.

