/usr/share/omf/xchat-gnome/ is in xchat-gnome-common 1:0.30.0~git20110821.e2a400-0.2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/omf/xchat-gnome/xchat-gnome-C.omf
/usr/share/omf/xchat-gnome/xchat-gnome-ca.omf
/usr/share/omf/xchat-gnome/xchat-gnome-cs.omf
/usr/share/omf/xchat-gnome/xchat-gnome-da.omf
/usr/share/omf/xchat-gnome/xchat-gnome-de.omf
/usr/share/omf/xchat-gnome/xchat-gnome-es.omf
/usr/share/omf/xchat-gnome/xchat-gnome-fr.omf
/usr/share/omf/xchat-gnome/xchat-gnome-it.omf
/usr/share/omf/xchat-gnome/xchat-gnome-oc.omf
/usr/share/omf/xchat-gnome/xchat-gnome-pt_BR.omf
/usr/share/omf/xchat-gnome/xchat-gnome-sl.omf
/usr/share/omf/xchat-gnome/xchat-gnome-sv.omf
/usr/share/omf/xchat-gnome/xchat-gnome-th.omf
/usr/share/omf/xchat-gnome/xchat-gnome-zh_CN.omf