7117053: Fix build warnings in com/sun/tools/jdi/*
Summary: Warnings fixed. Also reviewed by serguei.spitsyn@oracle.com, who is not yet an openjdk reviewer
Reviewed-by: ksrini
^build/
^dist/
/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/
^.hgtip
.DS_Store