Revert svn21255 (svn21254 in branches/maintenance/gramps40) as discussed in issue 6424

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21329 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
win32 changes

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21331 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
win32-py3 fix: ValueError: strftime() requires year in [1; 9999]

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21332 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
6379: Can not get ancestry or relationship tabs to work


git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/trunk@21337 4ae1f11a-8b86-4847-b8af-ab372f36d1fd