Rename "sanity" to "test".
haha, you idiot.  Add/rename counting/radix tests.  Right this time.
Merge branch 'radix_sort' into speed_test
Update build file with new names and new test.
Change unit test compilation procedure.
Merge branch 'radix_sort' into speed_test
Finish random_k test.
Merge branch 'radix_sort' into speed_test