8170184: Remove incorrect comments about generated jvmt.h
Reviewed-by: alanb, erikj

8063154: Checked in jvmti.h not in sync with generated jvmti.h
Reviewed-by: tbell

Merge

8166202: Tracefile gensrc cannot handle closed src dir in different location
Reviewed-by: egahlin, dholmes, tbell

8150736: Excessive disk space used by build system
Reviewed-by: ihse

8150601: Remove the old Hotspot build system
Reviewed-by: ihse