Review Request: JDK-8001334 - Remove use of JVM_* functions from java.io code

[Dan Xu]

Hi,

Interruptible I/O on Solaris has been highly problematicand undercut 
portability. And the long term plan is to remove it completely from JDK. 
In JDK6, the VM option, UseVMInterruptibleIO, was introduced as part of 
a phase-out plan to allow developers/customers to disable it. In JDK7, 
the default value of UseVMInterruptibleIO flag was changed to"false" to 
make Solaris blockingI/O operations uninterruptible by Java thread 
interruptsby default.

The last stepof this phase-out plan is to remove the feature completely. 
And it is good to do it now in JDK8. In this fix, I removed all related 
codes in IO area by replacing JVM_* functions with direct system calls. 
Please help review the proposed fix. Similar changes in networking area 
will be done via a different bug.

Bug: https://jbs.oracle.com/bugs/browse/JDK-8001334
webrev: http://cr.openjdk.java.net/~dxu/8001334/webrev.00/ 
<http://cr.openjdk.java.net/%7Edxu/8001334/webrev.00/>

Reference:
http://ccc.us.oracle.com/6423562
http://ccc.us.oracle.com/6554406

Best,

-Dan
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