8230611: infinite loop in LogOutputList::wait_until_no_readers()
Summary: Add copy constructor and copy assignment operator to ensure reader count remains accurate
Reviewed-by: kbarrett, dholmes
^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/
^src/utils/hsdis/build/