git-apply: fix rename header parsing
git-apply: fix rename header parsing

It's not "rename from" and "rename to", it's "rename old" and "rename new".

Which is illogical and doesn't match the "copy from/to" case, but that's
life. Maybe Junio will fix it up one of these days.

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git