* automatically detect if emma is on device
* build emma into libcore if necessary
* stop runtime before adb sync and restart afterwards
Change-Id: Id5087fdd6c0345f2b9b76658a5083b9260af061e
Some test need to be run in a place where they can write on the disk.
I know we should stop using /sdcard but until I see the new document
explaining how the launcher can access the playground, we are going
to keep it that way.
This supports specifying a file system path to test(s) to run. The path can be
a java test class file, a java package directory, or a parent directory
containing many tests.
This change allows users to run tests independently from test_defs.xml.
BUG 2133198
With this change, also refactored runtest as follows: Modified the
test suite schema and python implementation to have an inheritance
structure. Each test type has its own python module, which will
also handle the logic of running the test.
