bug 380584: [api] provide an api for lazy fetching of changes in
ChangeSet 

For getChangesets the changes were not returned. With this patch the 
changes can be retrieved through a lazy loading list. 

https://bugs.eclipse.org/bugs/show_bug.cgi?id=380584

Change-Id: I4b0f61fcce2ee344e9edeee3e5e8aa7f25a15598
2 files changed