RFR: 8066272: pack200 must support Multi-Release Jars

[Kumar Srinivasan]

Hi John, Steve,

Please review a fix for bug:
https://bugs.openjdk.java.net/browse/JDK-8066272

The webrev:
http://cr.openjdk.java.net/~ksrini/8066272/webrev.0/

To support Multi versioned jar files all  versioned class files
in the META-INF directory will be excluded from the global
constant pool, instead these will be regarded as resources
and stored in the resource specific bands.

Thanks
Kumar