Add a new test for the copy ctor of Adapter
Add a new test for the copy ctor of Adapter

This test simply copies a simdize<tuple> object to ensure the resulting
object still has the same values. Fails on clang < 3.7.

Signed-off-by: Matthias Kretz <372ea4eca737a13cd010ee806d4ce7b98ee71550@kde.org>

chr-engwer/Vc,chr-engwer/Vc,chr-engwer/Vc,VcDevel/Vc,VcDevel/Vc,VcDevel/Vc,VcDevel/Vc