enhancements to du

[Aaron Bentley]

Hi,
I've been working on some enhancements to du, and I'd be happy to 
contribute them back, if you're interested.

They add a second display mode to du in which it stores directory 
entries in a tree structure, and prints them later.  This allows entries 
to be displayed as percentages, in size-sorted order, and allows du's 
display to start from the top-level directory, rather than *ending* with 
the top-level entry.

If interested, please let me know what for you'd like it in.  I've been 
working against the fileutils 4.1 version of du.

Aaron