Blender Git Loki

Fixes for 8vytes scalar types used in DNA (int64 and double)

- makesdna wasn't checking whether such scalars are aligned to 8 bytes.
Now it should be handled correct.
- Some scalars in Object structure weren't 8 bytes aligned, which lead
to some incorrectly loaded files.

Fixed by adding void *pad. It's a bit tricky part of patch, but can't
see clearer way to make alignment correct

Usually ints/chars were used for padding, but in this case there are
some leading pointer properties before int64 properties and using
pointer as a padding resolves alignment on both 32 and 64 bit
platforms.

Using pointers as padding weren't needed before, because all types
were correctly aligned independent of whether pointers are 4 or 8
bytes.

This fixes #31774: Empty offset Y parameter is resetting