core/Makefile: start building ubuntu-boot.img with ubuntu-touch specific initrd

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>
core.mk: also building libui_compat_layer

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Revert "core/Makefile: start building ubuntu-boot.img with ubuntu-touch specific initrd"

This reverts commit bcc9e8af0eab321a2924149ba9e4028d2d665c41.

Reverting due to build issues:
Target boot image for Ubuntu Touch: ../out/target/product/maguro/ubuntu-boot.img
error: could not load ramdisk '../out/target/product/maguro/ubuntu-ramdisk.img'
make: *** [../out/target/product/maguro/ubuntu-boot.img] Error 1

Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>
Use system multilib toolchain

Signed-off-by: Dmitrijs Ledkovs <dmitrijs.ledkovs@canonical.com>
Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>
Revert "Revert "core/Makefile: start building ubuntu-boot.img with ubuntu-touch specific initrd""

This reverts commit 2fa3932892944d257830729ff15b2d66784d9463.

The race has been identified.

Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>
core/Makefile: making sure the ubuntu ramdisk is part of all deps rules

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Signed-off-by: Sergio Schvezov <sergio.schvezov@canonical.com>
core/Makefile: fixing internal bootimage files for ubuntu-boot.img

Signed-off-by: Ricardo Salveti de Araujo <ricardo.salveti@canonical.com>
Merge branch 'phablet-10.1' of git://phablet.ubuntu.com/CyanogenMod/android_build into phablet