Bugfix:

During redistribution of the data objects were created with new and
deallocated using the allocator. This works for the standard allocator
but might break with others. This fix prevents this behaviour by using
the allocator for the creation and allocation, too.
Additionally, it prevents false positive during memory leak detection
of valgrind. 

Should fix flyspray #1047!

I'll leave it to the relase manager to decide whether to merge this to
the release.

[[Imported from SVN: r1581]]