RFR(XS): 8191653: Test failures in BootAppendTests - missing jdk.internal.vm.compiler module

[Calvin Cheung]

The jdk.internal.vm.compiler module is not available on Solaris/Sparc. A 
simple fix is to detect if the platform is Solaris and not adding the 
module to the --limit-modules option.

Bug: https://bugs.openjdk.java.net/browse/JDK-8191653

webrev: http://cr.openjdk.java.net/~ccheung/8191653/webrev.00/

Tested on 64-bit platforms: linux, solaris/sparc, macosx, windows.

thanks,
Calvin