ancestors or descendants of said movement.

Instead of computing a closure of a set of nodes, and in a second step
filter nodes to only match those "related" to self, it's better to
compute directly a smaller closure, only consisting of [self]

That's about 3-4 times faster.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@36587 20353a03-c40f-0410-a6d1-a30d3c3de9de