Review Request: JDK-8186874: [MVT] Method name generated by ValueType is illegal

[mandy chung]

Webrev:
http://cr.openjdk.java.net/~mchung/valhalla/webrevs/8186874/webrev.00/

This patch fixes the bytecode generation with a legal method name.  I 
test with the runtime/valuetypes and compiler/valuetypes tests with 
-noverify flag removed except ValueOops.java and VboxUnbox.java tests. 
ValueOops.java and VboxUnbox.java tests fail with a different error when 
verifier is enabled.  I'll look into JDK-8187696 separately.

Tobias - the webrev includes your patch for JDK-8187670 to verify my 
fix.  Do you prefer to leave it for you to push separately?  Or I can 
push it for you?

thanks
Mandy