route: remove useless ipv6 header

Change-Id: I4cb0f232be6b7060e9a1bd66b4946060911405de
vi: try to insert utf8 at the right place

only check if we are inside an utf char for the moment

Change-Id: I60bbefcb1fa71e072a15c56985a53706ab53dc2e
Android: final cleanup of new build system

Rename hidden config files to busybox-<profile>.config

Set also KBUILD_OUTPUT to prevent generation of files in src dir,
if local make without 0= is made (which create host code)

Do not force the rebuild of config files
disabled, keep code for future enhancements.

  Check if -B parameter is present (mm -B) and do a clean
  build only if required, or if config files are not there

Change-Id: Ic6bc2bc7177b1f266b9c0d1ccdfb925c1aa00d46
Android.mk: toggle l-preview config flag