Summary:
Change requested by TAsn. Previuosly AT-SPI headers were kept private
and included directly into elementary source code. From now on,
AT-SPI headers can be included from Elementary.h public header, however
will be marked as beta APIs.
Commit includes following changes:
* include all atspi headers into new elm_interfaces.h header.
* marking all at-spi interfaces methods/properties as @protected.
* wrap all common headers with EFL_BETA_API_SUPPORT.
* make some common APIs visible in lib, by adding EAPI attribute
(if someone decides to use beta APIs).
Test Plan: out-off tree build with gcc, g++
Reviewers: tasn
Reviewed By: tasn
Subscribers: seoz, q66, kuuko
Maniphest Tasks: T1721
Differential Revision: https://phab.enlightenment.org/D1528