core: build the bluetooth parts

Signed-off-by: Mathieu Trudel-Lapierre <mathieu-tl@ubuntu.com>
Adding external/chromium to the build (to provide libchromium_net)

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