RFR: 8224211:[lworld] Reflective method invocation fails with assert(sender_sp != sp()) failed: must have changed

[Roland Westrelin]

I updated the webrev with a small tweak:

http://cr.openjdk.java.net/~roland/8224211/webrev.01/

(no need to allocate the buffer if ValueTypeReturnedAsFields is not on)

Roland.