updated (faster) exmap, now with more documentation

[John Berthels <jjberthels gmail com>]

Hi,

I've released a exmap-0.5.2. This fixes the issues reported by people
running on fedora core 4 and on 64bit kernels. Some performance
tweaking has also cut the long startup time roughly in half.

There are also now a few web pages, documenting exmap a little better:

http://www.berthels.co.uk/exmap

There is still an outstanding bug where I've seen the kernel deadlock,
so please don't run on a production server or without saving (and
sync'ing) anything you really care about in your desktop environment.
This seems rare, but you can guarantee it will happen at the worst
moment.

Following some suggestions by Lubos Lunak, in the future I'll
hopefully be adding support for tracking swapped out pages as well as
pages physically in RAM.

As always, please let me know of any successes, problems or comments.

regards,

jb