Comment 4 for bug 1374822

Patch tested with r13573 on OS X 10.7.5

It seems a useful feature to add. The new option AFAICT works as described - one issue I noticed is that the x,y position of the rearranged selection changes unexpectedly:

Steps to demonstrate the offset:
1) select objects to be arranged
2) set options as needed, check "[x] Ignore Box Size"
3) click on 'Arrange' repeatedly

Expected result:
No further changes after objects have been arranged the first time

Actual result:
The relative arrangement stays unchanged, but the selection as a whole is offset each time the button is pressed again.

The direction and the amount of the offset seems to vary depending on the values set for the x and y spacings.

I also noticed a small typo in the patch:
'on_ingore_box_checkbutton_changed' instead of 'on_ignore_box_checkbutton_changed'