RFR(XXS) 8232162: Object reallocation in Deoptimization::fetch_unroll_info_helper should not depend on EliminateNestedLocks

[Reingruber, Richard]

Hi,

could I please get reviews for

Webrev: http://cr.openjdk.java.net/~rrich/webrevs/2019/8232162/webrev.0/
Bug:    https://bugs.openjdk.java.net/browse/JDK-8232162

The fix removes the C2 flag EliminateNestedLocks from the condition for reallocating objects,
because C2 eliminates allocations depending only on DoEscapeAnalysis && EliminateAllocations.

I put the patch through SAP's nightly testing (includes all platforms, jtreg tests, and more).

Thanks, Richard.