8213014: Crash in CompileBroker::make_thread due to OOM
Summary: Added missing null checks and checks for pending exception.
Reviewed-by: kvn, dholmes, mdoerr
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*
.*/.git/.*