MSVC: like ICC, drop the value packs in simdize
MSVC: like ICC, drop the value packs in simdize

Seems like no one ever properly tested packs of values

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

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