Evas textblock: Fix wrong behavior when updating style.
Evas textblock: Fix wrong behavior when updating style.

When updating style we should not clear the utf8 text but we should relayout.
And definitely not reset it.

git-svn-id: 24a995eca3b83137dd7eab3408044d7832e202f7@57294 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

antognolli/Evas,antognolli/Evas,antognolli/Evas,antognolli/Evas