[test] add 2 testcases to t/compilers/imcc/syn/const.t
[test] add 2 testcases to t/compilers/imcc/syn/const.t

#1024 TODO
and #996 fixed.
Thanks to zefram for the testcases

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