add failing test

- specify the requirements in test class
fix FileNotFoundException(AndroidManifest.xml)

- @RunWith(TestRunners.WithDefaults.class) instead of @RunWith(RobolectricTestRunner.class)
make it work

- implement FragmentTestUtil#startFragment by referencing org.robolectric.shadows.DialogFragmentTest
Fix gradle build. One test still fails.
Rearrange DocumentLoader.
Merge pull request #460 from roman-mazur/gradle-build

Sync build.gradle with pom.xml
Merge pull request #457 from msbaek/FragmentTestUtil

I want to add FragmentTestUtil
Fix resource loading perf regression, add perf debugging.
Better perf debugging.
Switch to vtd-xml for resource loading for a 83% perf boost.
Turn off perf debugging.
Merge branch 'xian/use-vtd-for-xml-parsing'

* xian/use-vtd-for-xml-parsing:
  Switch to vtd-xml for resource loading for a 83% perf boost.