8234613: JavaThread can escape back to Java from an ongoing handshake
Summary: Check again if we have a pending/in-progress handshake operation after executing ~ThreadInVMForHandshake()
Reviewed-by: coleenp, dcubed, dholmes, rehn
/build/
/dist/
/.idea/
nbproject/private/
/webrev
/.src-rev
/.jib/
.DS_Store
.metadata/
.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
**/JTreport/**
**/JTwork/**