Blender Git Loki

Transform: Fixes after recent refactor

Pointed by strict compiler warnings, but some of the reports were
actually a real bugs:

- Access uninitialized memory of td_mirror_iter.

Assuming that iterator is to point to the first element of the
data array.

- Lattice's recalc data was never called.

There is also a fix for redundant declaration of recalcData() and
missing declaration of recalcData_lattice().