Summary: we need to include evil_private.h so that some symbols are declared
Test Plan: compilation
Reviewers: raster, zmike, cedric
Subscribers: #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D9129
efreet used an uncommon PACKAGE_DATA_DIR without the package name
because it used that to populate default variables.
Add another variable for that and make PACKAGE_DATA_DIR more common.
Tests still fails like crazy, and they assume installed data :-(
SVN revision: 82426