find and findIndex initial impl
`findIndex' implementation
Improving test framework
+ one JUnit class = one JS suite
+ reporting JS stacktrace on error
+ load function is available in JS
+ separate file for JS assertions
Merge branch 'findAndFindIndex' of https://github.com/eshepelyuk/rhino into eshepelyuk-findAndFindIndex
more V8 compatibility
Merge branch 'findAndFindIndex' of https://github.com/eshepelyuk/rhino into eshepelyuk-findAndFindIndex