Bug 903531 - Part 0: Remove obsolete tests.
Bug 903531 - Part 1: Standardize {Foo}Test to Test{Foo}.
Bug 903531 - Part 2a: Move Test{Foo}.
Bug 903531 - Part 2b: Update packages.
Bug 903531 - Part 2c: Move helpers.
Bug 903531 - Part 2d: Remove org.mozilla.android test package.
Bug 903531 - Part 2e: Uniformize license headers.
Bug 903531 - Part 3: Move test helpers into org.mozilla.background.testhelpers.
Bug 903531 - Part 4: Rework test package name and target.
Bug 903531 - Part 5: Copy JUnit 3 test suite to hg in copy script.