8038797: JVMTI FollowReferences does not report roots reachable from nmethods Summary: Also follow nmethods found on the execution stack. Reviewed-by: dlong, mgerdin

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.hgtip
^.bridge2
^.jib/
.DS_Store
.metadata/
.recommenders/