#2 Access to elements of arrays of byte/char/short/boolean brok

[Arno Unkrig]

Extracted from #828880 (submitted by Fabrice Carnet)
for clarity.

[Arno Unkrig]

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The opcode (IALOAD/IASTORE and consorts) was not computed
correctly. Fixed. Will go into the next (post-1.0) release.