simd_array: default to Vc_INTRINSIC for now
simd_array: default to Vc_INTRINSIC for now

make sure this all remains syntactic sugar

refs #613

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

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