PATCH: Implement status --no-ignore

Here is a patch to add a useful flag to svk status.

Let me know if it's ok to commit as is or if it need any changes.

Michael

[[[
Added --no-ignore switch to svk status, which just like the svn switch
of the same name shows which files are being ignored with a line
starting with 'I   ', rather than just ommiting them.

* lib/SVK/Command/Status.pm
  (options): Added no-ignore switch which sets no_ignore.
  (run): Pass a cb_ignored callback to XD:checkout_delta which prints
  ignored nodes if no_ignore is set.
  (=head OPTIONS): Documented no-ignore switch.
* lib/SVK/XD.pm
  Added support for calling cb_ignored when ignoring files if it is  
set.
* t/22status.t: Added 2 new testcases for status --no-ignore and
  status --quiet --no-ignore.
]]]

status_no_ignore.txt
Description: Text document