Evas textblock: Use more relevant replacement chars for formats.
Evas textblock: Use more relevant replacement chars for formats.

For example we use 0x2029 (PS char) for paragraph separator, \n for newline
and \t for tab. This lets us handle their bidi and line break properties
in a more correct manner.

git-svn-id: 24a995eca3b83137dd7eab3408044d7832e202f7@59214 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

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