Bug #06459 : change the lock strategy and split transactions in Merge citation.


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21504 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
[r21501]RelationshipCalculator: Promote no translation message to warning

And make it more specific.
Thanks to Tim Lyons.

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps40@21505 4ae1f11a-8b86-4847-b8af-ab372f36d1fd