RFR (M): 8182367: [MVT] Byte-code verifier support for minimal value types

[Lois Foltan]

Hello,

Review request for verifier changes to support MVT.

Webrevs:
     http://cr.openjdk.java.net/~lfoltan/mvt_verifier_jdk.1/webrev/
http://cr.openjdk.java.net/~lfoltan/mvt_verifier_hotspot.1/webrev/

Webrevs include changes to address preliminary review comments by John 
Rose and Harold Seigel.

Testing - hotspot jtreg tests, java/lang, java/util, java/io, JDK & 
Hotspot valhalla tests, jprt hotspot tests, JCK vm (in progress).

Thanks,
Lois