Test failure in old IE versions: localization tests

[fred-wang]

API/Localization/setLocale-1.html => extra comma in the test

API/Localization/parsing-1.html
API/Localization/parsing-2.html

=> The _ function does not seem to always insert the parameters correctly.

[fred-wang]

I suspect this is because IE8 and below don't do the split correctly and we have to use our own implementation.

[dpvc]

=> Merged.