Fix Math.fround polyfill
Re-enable commented out tests in TestArithmetic. Fixes #270.
Merge branch 'master' of https://github.com/andreasgal/j2me.js into fix_testarithmetic

Conflicts:
	tests/automation.js
Revert "Inject test scripts with casperjs"
Merge pull request #280 from andreasgal/revert-277-inject_scripts_with_casper

Revert "Inject test scripts with casperjs"
Merge pull request #276 from marco-c/fix_testarithmetic

Fix TestArithmetic