hg: jdk7/hotspot-gc/hotspot: 6637203: Classunloading messages go to stdout rather than Xloggc file, causing hangs when stdout is closed

[y.s.ramakrishna at sun.com]

Changeset: 75bd253e25dd
Author:    ysr
Date:      2010-01-04 14:51 -0800
URL:       http://hg.openjdk.java.net/jdk7/hotspot-gc/hotspot/rev/75bd253e25dd

6637203: Classunloading messages go to stdout rather than Xloggc file, causing hangs when stdout is closed
Summary: Decoupled TraceClassUnloading from verbose:gc, JVMTI_VERBOSE_GC and PrintGC[Details], making it settable in a manner identical to TraceClassLoading. Reverted an inadvertent change of TraceClassUnloading output in a previous changeset from gclog back to tty.
Reviewed-by: coleenp, dholmes, jmasa, poonam

! src/share/vm/prims/jvmtiEnv.cpp
! src/share/vm/runtime/arguments.cpp
! src/share/vm/services/classLoadingService.cpp