Patch is mostly created by script in egroupware/doc/fix_depricated.php in separate commit.
I do NOT advice to apply this patch to a production system (it's commited to trunk!), as the automatic modified regular expressions have a good change to break something ...
longer use GUIDs containing eGW's install_id, as the information is
irrellevant for SyncML and cause doublications of entries if the
install_id changes.
I plan to have a new rc4 Wednesday or Thursday containing these changes.