[test] add testcases for #1176
[test] add testcases for #1176

we see now splice() offset past end of array excpetions in perl5 and parrot.
This is of course not yet usable as such

tkob/parrot,tkob/parrot,tkob/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot,youprofit/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot,youprofit/parrot,parrot/parrot,tkob/parrot,tkob/parrot,parrot/parrot,parrot/parrot,parrot/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot,parrot/parrot