evas: give width offset when Evas tries to find ellipsis position

evas: give width offset when Evas tries to find ellipsis position

Summary:
If the last item before ellipsis item has bigger width than its advance,
evas_common_font_query_last_up_to_pos() function can find wrong ellipsis position.
When Evas finds a position for non last item, Evas must care about additionally
available space for glyph's width of the given x position.

ex) the last item's glyph before ellipsis item has a tail to draw above the ellipsis item.

@fix

Test Plan:
Test case will added as comment.
(Becasue of font license problem.)

Reviewers: herdsman, raster, jpeg, woohyun

Subscribers: cedric, Blackmole

Differential Revision: https://phab.enlightenment.org/D4727

Change-Id: Ie6dbec6c3dcc98ff0919d88e40969d0551dd898e