RFR(XS): 8139454 java/lang/Math/WorstCaseTests.java crashes on Linux-amd64

[Igor Veresov]

This fixes the encoding of pextrw instruction, to make it work with with sse2 only. 

Webrev: http://cr.openjdk.java.net/~iveresov/8139454/webrev-pextrw/ <http://cr.openjdk.java.net/~iveresov/8139454/webrev-pextrw/>
Contributed by: vivek.r.deshpande at intel.com <mailto:vivek.r.deshpande at intel.com>

For the record, I reviewed this.

Thanks,
igor
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