PG-Strom Regression Test

Hi,

I have implemented PG-Strom Reggression test.
For a start, GPU-PreAggregate Test Cases are registered. 
All of Test Cases can execute by "make installcheck".

If you want to add test, then you need to do following steps.

1. make test-case script(sql file) in "input/sql" directory.  (suffix is ".sql")
2. modify "targets" variable in input/make_expected.sh
3. in pg-strom top directory, execute "$ sh input/make_expected.sh"
4. add your test case in "input/parallel_schedule ".

Now, your test case registered.

Regards,