RFR: version specific class file parser and verifier fixes

[mandy chung]

Looks good.

jdk.internal.reflect.ClassFileAssembler::emitMagicAndVersion will
need to be updated too after I push the fix for JDK-8207790. We
can follow up separately depending on which patch goes first.

Mandy

On 7/18/18 11:43 AM, Harold David Seigel wrote:
> Hi,
> 
> Please review this LWorld change to ignore the ValueTypes attribute and 
> value type specific access flags for class file versions < 55.  This fix 
> also includes changes to the verifier to throw VerifyError exceptions 
> for withfield and defaultvalue opcodes for class file versions < 55.
> 
> Open Webrev: http://cr.openjdk.java.net/~hseigel/lworld.cfp_verf/webrev/
> 
> The changes were tested with various tier1 - tier5 Mach5 tests on Linux 
> and Mac.
> 
> Thanks, Harold
>