8213416: Replace some enums with static const members in hotspot/compiler Summary: Changes to fix enumeral and non-enumeral type in conditional expression warnings with -Wextra for gcc on hotspot Reviewed-by: kvn, thartmann

^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/.*