8202150: [REDO] Split globals.hpp to factor out the Flag class
Summary: Factored out Flag out go globals, renamed to JVMFlag
Reviewed-by: coleenp, dholmes, kvn
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*