Fix e_menu trying to swallow an object from a different canvas

Fix e_menu trying to swallow an object from a different canvas

_e_menu_realize was trying to swallow the menu->container_object into
the menu->bg_object, but the menu->bg_object was being created on the
compositor canvas, and the container object was being created on the
e_comp->elm_win.

With recent EFL changes, this causes an abort inside Evas.

To fix this, set the menu->evas to be the Evas from the e_comp->elm_win.

Signed-off-by: Chris Michael <cp.michael@samsung.com>