8233913: Remove implicit conversion from Method* to methodHandle Summary: Fix call sites to use existing THREAD local or pass down THREAD local for shallower callsites. Make linkResolver methods return Method* for caller to handleize if needed. Reviewed-by: iklam, thartmann, hseigel

^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/