RFR (XS) JDK-8054355: ENFORCE_CC_COMPILER_REV needs to be updated to Solaris C++ 12u3 for JDK 9

[Lois Foltan]

Hi Everyone,

Please review the following fix:

Webrev:
     http://cr.openjdk.java.net/~lfoltan/bug_jdk8054355/

Bug: ENFORCE_CC_COMPILER_REV needs to be updated to Solaris C++ 12u3 for 
JDK 9
     https://bugs.openjdk.java.net/browse/JDK-8054355

Summary of fix:
Update of C++ validation check for JDK 9 on Solaris.

Testing:
Built various variants with Solaris C++ 12u3 to confirm that the warning 
concerning C++ version is no longer generated.  Also built with versions 
other than 12u3 to further confirm that the warning is generated in 
those situations.

Other testing in progress - jprt build to confirm builds are successful, 
quick run of Hotspot jtreg test/runtime in progress