8081567: java/lang/ProcessHandle/InfoTest.java failed Cannot run program "whoami"
Summary: Replace use of whoami with checking the user against a file created
Reviewed-by: igerasim
^build/
^dist/
^webrev
/nbproject/private/
^src/share/tools/hsdis/build/
^src/share/tools/IdealGraphVisualizer/[a-zA-Z0-9]*/build/
^src/share/tools/IdealGraphVisualizer/build/
^src/share/tools/IdealGraphVisualizer/dist/
^src/share/tools/IdealGraphVisualizer/nbplatform/
.igv.log
^.hgtip
.DS_Store