[TIMOB-7062] Android: Debugger - V8 - The arguments variable contains unexpected variables in the argtest

Details: After step 7 in test case 1021 in the [Debugger Test Plan](http://wiki.appcelerator.org/display/tp/Debugger+Test+Plan), unexpected variables appear. However, when running the argtest on Rhino, extra variables do not appear after expanding it. Steps to reproduce: 1. Create a new project in studio called debug_test 2. Move the js files form the debug test project in titanium_mobile_tests_internal 3. Refer to the test plan at http://wiki.appcelerator.org/display/tp/Debugger+Test+Plan 4. Execute test case 1021 on V8 Actual: On V8, after expanding the arguments variable, extra variables appear. See attachment. Expected: On Rhino, after expanding the arguments variable, no extra variable appears.