8006753: fix failed for JDK-8002415 White box testing API for HotSpot Summary: Modify WhiteBoxAPI to use interface classes from test/testlibrary instead, add ClassFileInstaller to resolve the boot class path issue Reviewed-by: ctornqvi, dsamersoff, coleenp, kvn

^build/
^dist/
nbproject/private/
^webrev
^.hgtip
^.bridge2
.DS_Store