Roland Kammerer authored Jan 06, 2016 and Natanael Copa committed Jan 06, 2016

- $PWD is already at $srcdir => first cd to $startdir.
- If we don't find an APKBUILD for the kernel flavor, error out.
- We are in a sub-shell, we do not have to protect $pkgname.
- Return 0 in case we did not "die", otherwise in the positive case
  where the last check succeeds, it sets the sub-shell return value
  to 1, which then triggers the failure path.