improve readability: avoid macros inside our code

improve readability: avoid macros inside our code

mixing #ifdef'ed blocks inside code is bad, can lead to warnings if
some variables are not used and it's a pain to read.

instead, just define functions and always call them, choose their
implementation based on the ifdef macros. I opted to have 2
declarations, but one can go like other parts and #ifdef around the
function contents as well.

git-svn-id: http://svn.enlightenment.org/svn/e/trunk/eina@37281 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33