Evas: Multiple changes that all relate to the Harfbuzz integration:

Evas: Multiple changes that all relate to the Harfbuzz integration:
1. Started feeding Evas_Text_Props to the font engine instead of Evas_BiDi_Props because no we have more general text properties as well - i.e, OpenType stuff.
2. Full Harfbuzz integration which gets compiled in by default (if harfbuzz is present) but only works if the environment variable EVAS_USE_OT is set to 1 (because OT is way slower than regular text rendering).
3. Cleaned the font querying/drawing functions.
4. Added font_shaped function to all of the engines, which by default calls teh harfbuzz stuff (default on linux that is).
5. Moved some source files around a bit to make more sense.

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/evas@56455 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33