hg: hsx/hsx24/hotspot: 7197906: BlockOffsetArray::power_to_cards_back() needs to handle > 32 bit shifts

[bengt.rutisson at oracle.com]

Changeset: 9c930c24f9b0
Author:    brutisso
Date:      2012-09-13 21:20 +0200
URL:       http://hg.openjdk.java.net/hsx/hsx24/hotspot/rev/9c930c24f9b0

7197906: BlockOffsetArray::power_to_cards_back() needs to handle > 32 bit shifts
Reviewed-by: brutisso, johnc, ysr
Contributed-by: Hal Mo <kungu.mjh at taobao.com>

! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp
! src/share/vm/memory/blockOffsetTable.hpp