There is no reason for the makefiles to be split up as they have
been. They are not long enough to be hard to oversee in a single
file and, arguably, are even easier to manage in a single file.
Additionally, the dependency updater has been rewritten to be a
bit more flexible with its inputs and outputs. The usage stays
exactly the same.
Conflicts:
configs/pa_extras.mk
configs/system.mk
main.mk
prebuilt/app/Android.mk
Change-Id: Ie26c3b89721d03825fa3116ab5fe0cae76ec55ab