[sync] WBXML library

[Vilius Šumskas]

> I just learned (thanks, Chuck), that our WBXML en/de-coder 
> relies on the wbxml library (see 
> http://libwbxml.aymerick.com/). More specific: its command 
> line tools xml2wbxml/wbxml2xml. I have the latest version
> (wbxml2 0.9) installed on my machine (came with Suse 9.3). So 
> when you have problems with the wbxml stuff, try tu update 
> the library and ensure that xml2wbxml/wbxml2xml are available 
> to the webserver.

Thanks. I finally managed to get good XML. I think this dependency must be
mentioned somewhere in Horde/SyncML documentation, because this package is
not what everybody has by default.

However I'm still unable to syncronize with Z600. I will look at it tomorrow
morning.