workaround for the binder problems which occur
when too many tests are executed in too little
time. The other is a fix for the memory cleanup
that was added a while ago, but should have
affected non-static fields, not static ones.
BUG=1796494
Automated import of CL 147725
annotated with SideEffect if the host is running in single test mode.
Also adding some cleanup mechanism and some logcat logging about memory consumption
BUG=1789657
Automated import of CL 146711
