Request for reviews (S): 7128352: assert(obj_node == obj) failed

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/7128352/webrev

7128352: assert(obj_node == obj) failed

The assert was added in 7125896 changes. Object reference in monitor info could 
be CheckCastPP of the locked object. Compare uncasted object nodes.

Also added missing "public" for 7116216/StackOverflow.java.

Tested with full CTW and compiler regression tests.

Thanks,
Vladimir