Add test for itanium mangler
Add test for itanium mangler

stefanseefeld/numba,gmarkall/numba,ssarangi/numba,ssarangi/numba,gmarkall/numba,gdementen/numba,IntelLabs/numba,seibert/numba,IntelLabs/numba,pitrou/numba,GaZ3ll3/numba,stonebig/numba,sklam/numba,IntelLabs/numba,sklam/numba,jriehl/numba,ssarangi/numba,stefanseefeld/numba,gmarkall/numba,stefanseefeld/numba,gdementen/numba,cpcloud/numba,GaZ3ll3/numba,stonebig/numba,numba/numba,numba/numba,seibert/numba,pitrou/numba,gmarkall/numba,jriehl/numba,pitrou/numba,gdementen/numba,cpcloud/numba,cpcloud/numba,pombredanne/numba,sklam/numba,pombredanne/numba,ssarangi/numba,IntelLabs/numba,stuartarchibald/numba,numba/numba,stefanseefeld/numba,stefanseefeld/numba,seibert/numba,cpcloud/numba,pombredanne/numba,seibert/numba,numba/numba,GaZ3ll3/numba,jriehl/numba,stuartarchibald/numba,numba/numba,jriehl/numba,cpcloud/numba,GaZ3ll3/numba,stonebig/numba,gdementen/numba,jriehl/numba,stuartarchibald/numba,GaZ3ll3/numba,sklam/numba,stonebig/numba,pitrou/numba,gmarkall/numba,seibert/numba,pombredanne/numba,sklam/numba,stuartarchibald/numba,pitrou/numba,pombredanne/numba,IntelLabs/numba,stonebig/numba,gdementen/numba,ssarangi/numba,stuartarchibald/numba