With a fresh;y sync'ed repo (appended your manifest snippet to android_x86.xml), I'm hitting these build errors at very early stage:
bootable/newinstaller/Android.mk: error: edit_mbr (EXECUTABLES linux-x86_64) missing libdiskconfig_host (STATIC_LIBRARIES linux-x86_64) 
You can set ALLOW_MISSING_DEPENDENCIES=true in your environment if this is intentional, but that may defer real problems until later in the build.
packages/apps/Bluetooth/tests/Android.mk: error: BluetoothProfileTests (APPS android-x86) missing com.android.emailcommon (JAVA_LIBRARIES android-x86) 
You can set ALLOW_MISSING_DEPENDENCIES=true in your environment if this is intentional, but that may defer real problems until later in the build.
build/core/
main.mk:728: error: exiting from previous errors.