RFR(S): 8151828: Jittester: array creation node handled inproperly in source code visitor for non-int numerical arrays

[Dmitrij Pochepko]

Hi,

please review small fix for 8151828: Jittester: array creation node 
handled inproperly in source code visitor for non-int numerical arrays

A problem was in Arrays.fill method usage with mismatched argument types 
for primitive types arrays, so, generated tests compilation failed.

This fix removes respective Arrays.fill usage generation for primitive 
types.

bug: https://bugs.openjdk.java.net/browse/JDK-8151828
webrev: http://cr.openjdk.java.net/~dpochepk/8151828/webrev.01/

I've tested fix locally.

Thanks,
Dmitrij