hg: jdk7/hotspot-gc/hotspot: 6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed

[y.s.ramakrishna at sun.com]

Changeset: 34fb2662f6c2
Author:    ysr
Date:      2010-01-26 16:52 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/34fb2662f6c2

6920090: G1: Disable ReduceInitialCardMarks at least until 6920109 is fixed
Summary: G1 now answers "no" to the query can_elide_initializing_store_barrier() in the product build. A debug flag allows alternate behaviour in debug builds.
Reviewed-by: iveresov, tonyp

! src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
! src/share/vm/gc_implementation/g1/g1_globals.hpp
! src/share/vm/gc_interface/collectedHeap.cpp