evas: Fixed the textblock format to be drawn according to the glyph's horizontal...

evas: Fixed the textblock format to be drawn according to the glyph's horizontal advance width.

Summary:
Some characters have different two value on glyph's width and horizontal advance width.
If the glyph's width is smaller than advance width, format can be drawn weird.

Test Plan:
Set underline:on to the entry style and just insert the following characters.
。
、
）
（

Reviewers: tasn, woohyun

CC: cedric
Differential Revision: https://phab.enlightenment.org/D270