8210481: Remove #ifdef cplusplus from vmTestbase
Summary: Remove all cplusplus ifdefs from vmTestbase
Reviewed-by: dholmes, iignatyev, cjplummer, sspitsyn
/build/
/dist/
/.idea/
nbproject/private/
/webrev
/.src-rev
/.jib/
.DS_Store
.metadata/
.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
**/JTreport/**
**/JTwork/**