Evas Text: Update text layout when ellipsis is changed without resize

Evas Text: Update text layout when ellipsis is changed without resize

Summary:
When only ellipsis is changed from 0.0~1.0 to -1.0 without resize,
the text is never updated. Because, previous state for ellipsis is never kept
and used properly to check when Evas Text needs to be updated.

It does not have any effect when ellipsis is changed from -1.0 to 0.0~1.0.
Because, Evas text always resize itself according to its text size.
So, necessarily, Evas text object has to be resized to the smaller size.
Commonly, Edje will handle its size if Evas text needs to be ellipsized.
@fix

Test Plan: Test case is included.

Reviewers: tasn, woohyun, herdsman

Subscribers: cedric, jpeg

Differential Revision: https://phab.enlightenment.org/D3448

Conflicts:
	src/tests/evas/evas_test_text.c

Change-Id: Id5c484152efbe0a4df723c4422127e46ad5213be