[mylar-dev] task list externalization

[Eugene Kuleshov <eu@xxxxxxxx>]

 While I am in an enthusiastic mood, I'd like to suggest to make some 
changes in ITaskListExternalizer API that need to be done before 1.0 
release.

 The main reason is to eliminate org.w3c.dom.* classes from this API 
and reduce runtime memory footprint of the task externalizers.

 As a first step we can introduce own classes for Element, which may 
use dom classes internally (for now). So, connector's externalizers will 
only deal with our Element and won't have to change their implementation 
if we'll need to change externalizer internals.
 Another benefit of own element is that we can have stream based 
implementation at least for writing task data. That should help to speed 
things up for saving big task lists.

 See bug https://bugs.eclipse.org/bugs/show_bug.cgi?id=166609

 regards,
 Eugene