2009/228 ls enhancements

[Jason King]

There are two corrections to the case materials I need to note, I
don't believe it effects the vote or need a separate case for
discussion.  If anyone disagrees, please speak up now.

1. -U flag
This was accidentally omitted from the case template, but was included
in the mail discussions (where I sort the flags by new, aliases,
etc.).   It is a new flag. The description is:

-U Do not sort the output.  Output is in directory order.

2. --block-size.  A code reviewer noticed that the suffixes supported
aren't correctly reflected in the case materials.  The corrected
information (which matches GNU ls behavior) is:

--block-size=NN.  Use NN sized blocks.  NN can be suffixed with
[kKmMgGtTpPeEzZyY]B? (in regex format -- and yes, GNU ls really can
use yottabyte sized blocks if you want).  The optional 'B' (only
uppercase) signifies powers of 10 instead of 2 (e.g. KB is 1000, while
K is 1024).  This is not the same as the -h option in du(1m) or
df(1m), nor is i compatible with standard SI notations, but is
compatible with GNU ls.