8174879: Rename jdk.vm.ci to jdk.internal.vm.ci
Summary: Rename jdk.vm.ci and jdk.vm.compiler modules to jdk.internal.vm.ci and jdk.internal.vm.compiler.
Reviewed-by: mchung, ihse, dnsimon

8168137: import-hotspot build target not removed from hotspot-ide-project
Reviewed-by: erikj

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