This adds version supporting macros VMSTATE_STRUCT_POINTER_TEST_V
and VMSTATE_STRUCT_POINTER_V in addition to the already existing
VMSTATE_STRUCT_POINTER and VMSTATE_STRUCT_POINTER_TEST macros.

Cc: Andreas Färber <afaerber@suse.de>
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: NJuan Quintela <quintela@redhat.com>