RFR (XS) 8221917: serviceability/sa/TestPrintMdo.java fails on 32-bit platforms

[Aleksey Shipilev]

Bug:
  https://bugs.openjdk.java.net/browse/JDK-8221917

Fix:
  http://cr.openjdk.java.net/~shade/8221917/webrev.01/

The failure is caused by MDO change in 11 that broke SA a little. I am planning to backport it all
the way down to 11u. See bug for details.

Testing:
  - Linux x86_32 fastdebug: TestPrintMdo, entire serviceability, tier1
  - Linux x86_64 fastdebug: TestPrintMdo, entire serviceability
  - jdk-submit (running)

Thanks,
-Aleksey