SIMD++, Misc++, updates

- updated for Clang 3.5
- removed explicit from all default ctors
- ozCore
  * OZ_ALIGNED -> alignas
  * SIMD
    + multiple bugfixes
    + completed NEON implementation
    + vSqrt, vInvSqrt, vFastInvSqrt
    + intrinsics used instead of builtins (where possible)
- cmake
  * cmake/*.cmake files reformatted