When a device java module was using the layers.txt files, and that device java module depenended on
a host java module, when building the host java module, the layer checker tried to run and would
fail, complaining about the host module.
The problem was that since the value wasn't set for the host module, it would be inherited from its
dependent module (a make "feature") and would cause the layer checker to run. So this change makes
it explicitly set PRIVATE_JAVA_LAYERS_FILE for host java modules too.
Change-Id: Ifbc085295d0995a2da5d6d63d8cb379ef2631cc4
Bug: 5448433
Instead of deferring the removal to building the app.
In that case any R/Manifest classes in any static Java libraries will be
deleted, no matter if they are generated from Android resource, or just
source R.java/Manifest.java in the source tree by accident.
Change-Id: I656f45e3cbc3796c5d4832363231480b3f1dc5b8
The Dalvik core libraries team would like to start making warnings
errors in certain packages by definition LOCAL_JAVACFLAGS. This will
allow easier debuging of warnings in other packages by supplying
"-Xlint:..." options.
