a newline is needed when appending log messages to the main log
put install-specific settings into install.conf (fixes #55)

These variables are only needed at install time, and only by the install
script, so make them into a native file that is directly sourced by the
install script.
upgrade busybox to v1.21.1 to get some Android fixes
update busybox_config for v1.21.1
build busybox with verbose usage messages
use /system/xbin/losetup if found otherwise use included busybox losetup

It seems that the busybox losetup does not work properly on newer Android
releases.  On Team EOS on a Motorola Xoom and CM 10.1 on a Samsung Galaxy
Note II, $app_bin/losetup returns nothing while /system/xbin/losetup shows
some loops still attached... arg...
include debug header in complete-debian-setup.sh

The other scripts get it automatically from including lildebi-common, but
this script is minimalist.
quit running install scripts if one exits with an error

This makes for hard to find issues since the process just keeps going if
there is an error.
include cdebootstrap-static 0.5.10 from Debian-armel

This will be used to replace debootstrap, since its too troublesome.
convert install process from debootstrap to cdebootstrap

debootstrap had constant problems running gpgv which cdebootstrap does not
seem to have.  It turns out that using cdebootstrap simplifies the install
process and makes a smaller minimal install.
cdebootstrap sets a basic sources.list, only create if needed
purge pkgdetails, cdebootstrap does not need it, only debootstrap
purge debootstrap, we're using cdebootstrap now
install e2fsck.static from Debian, only if needed

It was included in the .apk, but that is not needed since the scripts can
install it via Debian, then copy into place in $app_bin.
purge e2fsck-static from the build
only delete loop on stop if find_attached_loopdev finds something

This prevents losetup from dumping a usage message to the log.
update Polish translation (thanks mickul!)
udpate Vietnamese translation (thanks ppanhh!)
add Simplified Chinese translation (thanks xtoaster!)
add checks to make sure that the native assets got included in the APK