Add #include "opt_kstack_pages.h" and "opt_kstack_max_pages.h" to remain

in sync with the backend machdep code.  When cpu_thread_init() does not
have the same idea of KSTACK_PAGES as the thing that created the kstack,
all hell breaks loose.

Bad alc! no cookie! :-)

sys/vm/vm_glue.c

@@ -64,6 +64,8 @@
 __FBSDID("$FreeBSD$");
 
 #include "opt_vm.h"
+#include "opt_kstack_pages.h"
+#include "opt_kstack_max_pages.h"
 
 #include <sys/param.h>
 #include <sys/systm.h>