[sync] all day events

[Karsten Fourmont]

Hi,

I've made some changes regarding the handling of all day events.

As there doesn't seem to be a unique standard to determine what's an all 
day event and what not, I can't be sure if this works for all phones 
now. Hopefully it does.

So please give it a try.

If it's not working, post an example of an all day event sent by your 
phone/pda to the list. The data can be found in /tmp/sync/data.txt

Cheers,
  Karsten