Summary:
Support union, subtract, intersection, equal(comparison) between tilers.
@feature
Test Plan: Test with added test case(src/tests/eina/eina_test_tiler.c) and the example(src/examples/eina/eina_tiler_02.c)
Reviewers: gwanglim, devilhorns, raster, zmike, cedric
CC: cedric
Differential Revision: https://phab.enlightenment.org/D880