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Change-Id: Ibdf0339a6adb93b632410ef4f2a7020ebfe66d93

Change-Id: If7127c21f4de97c7e6f10b789251d392b578435c

Change-Id: I154f2fd3828ffd937c82410f5f9995402d7be15e

This gets rid of the 'sources' directory and allows all sources
of a given Android application to be in the same directory tree
without using a symlink trick.

Note that apps/<name>/Application.mk is still required though.
A later release of the NDK will get rid of it too, but the change
is too drastic for the upcoming release.

The change moves various source files from sources into their
app/<name>/project/jni directory as well.

The whole documentation is updated to reflect the change.

Also remove reference to docs/ROADMAP.TXT from README.TXT (doh)

Also update README.TXT and docs/ANDROID-MK.TXT accordingly, to document the use of
LOCAL_LDLIBS.