Blender Git Loki

- moved do_versions stuff for 2.30 release, to also check 2.30 files.
this is safe initialization only.
based at report from madprof.. he had a 2.30 file without this
data correctly initialized... but how it happens? tuhopuu files?

anyhoo, we might think of splitting do_versions in 2 parts:
1. do_versions initialization of old variables that changed
like physics properties that need to be scaled or so
2. do_init for newly created variables that are not allowed to be zero,
this can safely be done for each file