Inconsistently, while install() for Android devices automatically
handles both APKs and executables appropriately, uninstall() only works
for packages. Changing to use uninstall_executable() for the scripts
deployed by recentfling.
- Scripts are now deployed during via install() ensuring that they are
executable.
- Handle the case where the PID file is delted before getting to
process_results.
- Exposed the option to not start any apps before flinging via a
parameter.
