simdarray: generic Split never matches pointers
simdarray: generic Split never matches pointers

For pointers there are two cases: not adjusted (gather, scatter, ...) and
adjusted by secondOffset (load, frexp, ...). Since T&& is greedy, I
rather want the generic T&& overloads disabled for anything that is a
pointer.

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