Blender Git Loki

Fix (unreported) broken shapekeys after 'make_local' of datablocks used both directly and directly.

At first thought it was own recent work, but think issue is there since ages actually...

Basically, id_make_local() would always localize mesh/curve/lattice shapekeys, even in case
obdata localization actually made a local copy instead of localizing original datablock.

This was causing shapekeys being localized twice, and other odd nasty effects.