hg: jdk8u/hs-dev/hotspot: 7090324: gclog rotation via external tool

[yumin.qi at oracle.com]

Changeset: f42c10a3d4b1
Author:    minqi
Date:      2014-03-31 13:09 -0700
URL:       http://hg.openjdk.java.net/jdk8u/hs-dev/hotspot/rev/f42c10a3d4b1

7090324: gclog rotation via external tool
Summary: GC log rotation can be set via java command line, but customer sometime need to sync with OS level rotation setting.
Reviewed-by: sla, minqi, ehelin
Contributed-by: suenaga.yasumasa at lab.ntt.co.jp

! src/share/vm/runtime/arguments.cpp
! src/share/vm/runtime/globals.hpp
! src/share/vm/runtime/safepoint.cpp
! src/share/vm/runtime/vm_operations.hpp
! src/share/vm/services/diagnosticCommand.cpp
! src/share/vm/services/diagnosticCommand.hpp
! src/share/vm/utilities/ostream.cpp
! src/share/vm/utilities/ostream.hpp
+ test/gc/TestGCLogRotationViaJcmd.java