[dwm] Help with grid layout

Hi,

can somebody tell me how to change the latest grid layout patch to put
the clients in two columns and one row instead of two rows and one
column when there are only two clients in a tag? [1] The current way of
doing it isn't very nice on widescreen monitors...

Cheers,
Valentin

[1]: Right now it looks like this:
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and I'd prefer this:
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