RFR(XS) 8187078: -XX:+VerifyOops finds numerous problems when running JPRT

[dean.long at oracle.com]

http://cr.openjdk.java.net/~dlong/8187078/webrev/
https://bugs.openjdk.java.net/browse/JDK-8187078

This patch fixes the original problem reported against C1.  I filed a 
new bug JDK-8209961
for AOT problems with -XX:VerifyOops.

dl