[oe] postinst scripts and opkg configure

[Sergey Lapin]

>
> Actually, update-rc.d scripts should work on build host (that "$OPT" in script
> is exactly for that purpose) and so are update-alternatives (thanks to
> OPKG_OFFLINE_ROOT magic), so there might be something wrong with your setup.
I found the reason for that error - update-rc.d is not being staged,
so scripts fail.
bitbake update-rc.d update-rc.d-native -c rebuild doesn't help either.
Can't see why, because copying it from workdir to staging bin fixes
this problem.
Any ideas?

S.