RFR: JDK-8026126 and others - Solaris and Linux code cleanup

[Gerald Thornbrugh]

Hi,

I am a member of the Oracle Hotspot group and there is an initiative to 
clean up
things like uninitialized variables and unclosed file descriptors in 
JDK9.  I have run
UTE and JPRT tests on Solaris and Linux test machines. The below webrevs 
show
the cleanup in some of the Solaris and Linux source areas.

The Linux cleanup changes:

Bugs:
https://bugs.openjdk.java.net/browse/JDK-8026126
https://bugs.openjdk.java.net/browse/JDK-8025497

Webrev:

http://cr.openjdk.java.net/~coleenp/linux-cleanup/

The Solaris cleanup changes:

Bugs:
https://bugs.openjdk.java.net/browse/JDK-8025481
https://bugs.openjdk.java.net/browse/JDK-8029777
https://bugs.openjdk.java.net/browse/JDK-8025665

Webrev:
http://cr.openjdk.java.net/~coleenp/solaris-cleanup/

Please review my changes and let me know if you have questions.

Thanks,

Gerald Thornbrugh