Control whether wifi direct is enabled from build.xml, a file that's
already different for the two variants. The point here is to do a
release with permissions changes but without having to fix everything
wrong with wifi direct.
For some reason the 'clean-debug' cycle stopped working because the
file was nuked then not regenerated. Rather than figure out why, just
add a target to generate it every time.
that the app so generated runs in emulator, talks to relay, and does
not crash. Makefile has rules for .java, .xml and .h that run through
sed to xw4 in import statements, package names etc so the variant app
is in a different namespace. Also honors any files in the variant
tree that are actually checked into git should it be necessary to make
changes beyond what sed can manage.
