cgroups: move all threads with the same name in couple to a moved task
cgroups: move all threads with the same name in couple to a moved task

This change adds a feature of moving all classified threads with the same name
of a task under partition transition. This restores the original behaviour model
for multithreaded applciations, when the whole group is moved and apparently the
threads of an application belong to the same application group.

maemo-foss/maemo-multimedia-ohm-plugins-misc,jusa/ohm-plugins-misc,tswindell/ohm-plugins-misc,maemo-foss/maemo-multimedia-ohm-plugins-misc,tswindell/ohm-plugins-misc,maemo-foss/maemo-multimedia-ohm-plugins-misc,jusa/ohm-plugins-misc,tswindell/ohm-plugins-misc,jusa/ohm-plugins-misc,jusa/ohm-plugins-misc