Preliminary review: Adding tracing of I/O calls

[mark.reinhold at oracle.com]

2012/11/2 11:36 -0700, staffan.larsen at oracle.com:
> Webrev: http://cr.openjdk.java.net/~sla/iotrace/webrev.00/

Who (or what) is the intended consumer of the sun.misc.IoTrace and
IoTraceListener APIs?  In other words, are these meant to be stable
external interfaces that we're going to support for use by arbitrary
code over the long term?

The reason I ask is that sun.misc is likely to go away in JDK 9, as
part of the modularization work.  If these APIs are meant to be used
by any code outside of the JDK then we should probably put them in
a more appropriate package now in order to avoid pain later on.

- Mark