This adds code to run the Eolian static checker as part of tests,
but considering how many failures there are at this point, does
not enable it. Once they're all fixed, it can be enabled by
removing the #if 0.
efl_check.h must be included and the EFL_START/END_TEST macros must be
used in place of normal START/END_TEST macros
timing is enabled when TIMING_ENABLED is set
https://phab.enlightenment.org/w/improve_tests/
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>