hg: jdk8u/hs-dev/hotspot: 8038939: Some options related to RTM locking optimization works inconsistently

[vladimir.kozlov at oracle.com]

Changeset: 526acaf3626f
Author:    kvn
Date:      2014-04-09 11:18 -0700
URL:       http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/526acaf3626f

8038939: Some options related to RTM locking optimization works inconsistently
Summary: Switch UseRTMXendForLockBusy flag ON by default and change code to retry RTM locking on lock busy condition by default.
Reviewed-by: roland

! src/cpu/x86/vm/globals_x86.hpp
! src/cpu/x86/vm/macroAssembler_x86.cpp