FreeBSD/src b7565d4 (r351181)sys/vm vm_phys.c vm_page.c

Encapsulate phys_avail manipulation in a set of simple routines.  Add a
NUMA aware boot time memory allocator that will be used to allocate early
domain correct structures.  Code partially submitted by gallatin.

Reviewed by:    gallatin, kib
Tested by:      pho
Sponsored by:   Netflix
Differential Revision:  https://reviews.freebsd.org/D21251
DeltaFile
+218-2sys/vm/vm_phys.c
+5-16sys/vm/vm_page.c
+5-0sys/vm/vm_phys.h
+228-183 files

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