Use shorter type names and prepare for full integral support.
Use shorter type names and prepare for full integral support.

* Use the shorter type aliases in Vc:: for integral types.
* Declare type aliases for all Masks of integral type.

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

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