Request for reviews (XS): 6827605 for HS16

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/6827605_hs16/webrev.00

Fixed 6827605: new String intrinsics may prevent EA scalar replacement

Problem:
New String.indexOf SSE4.2 intrinsic prevents EA scalar replacement
of String object clone in the famous hot jbb code in Orderline.process:
stockData.indexOf("ORIGINAL")

Solution:
I did not have time to implement full fix in HS16.
So it is forward port of the fix in HS15.

Reviewed by:

Fix verified (y/n): y, refworkload

Other testing:
JPRT