EFL: Test generator macros

EFL: Test generator macros

These are the beginnings of "boilerplate" test generating macros. For each
control, adding a few macros can yield common evas-level tests.

Easier to maintain centrally, and will improve velocity of test writing.

For reference, actionslider and button tests were aggressively refactored to
take advantage of these conveniences.

XXX: Getting bitten by an arcane preprocessor issue, otherwise I would
uncomment the EFL_BASIC_TESTS macro. It would appear to be a whitespace issue,
but tabling for now.

Signed-off-by: Joe Konno <joe.konno@intel.com>