DalvikRunner --tee option to send output to a file or stdout at runtime

DalvikRunner --tee option to send output to a file or stdout at runtime

Added --tee option so we can watch test output while the test is
running, as opposed to waiting until all the output is collected.

As part of this, Command.Builder can now optionally specifiy a
PrintStream via tee (name from tee(1)).

Added ADB.waitForFile to accompany ADB.waitForNonEmptyDirectory

Removed gross bash wait loop hack in Activity Mode by replacing
Mode.buildCommands with Mode.runTestCommand.

Fixed bug that out generated APK package names did not contain a
required "." in all cases.