Evas: fix use of __always_inline__ attribute

Evas: fix use of __always_inline__ attribute

Fix multiple storage bug.
 * __forceinline is the equivalent of __always_inline__ on Windows. It has
   'extern' as storage, so static must not be used with it
 * use __always_inline__ and not always_inline as attribute value instead.
   No need to add storage class with __always_inline__ too.
 * static inline is fine

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/evas@64767 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33