FreeBSD/src b436609 (r320391)sys/compat/freebsd32 freebsd32.h freebsd32_misc.c, sys/net bpf.c

Update comments and simplify conditionals for compat32

Only amd64 (because of i386) needs 32-bit time_t compat now, everything else is
64-bit time_t.  Rather than checking on all 64-bit time_t archs, only check the
oddball amd64/i386.

Reviewed By: emaste, kib, andrew
Differential Revision: https://reviews.freebsd.org/D11364
DeltaFile
+6-6sys/net/bpf.c
+4-4sys/compat/freebsd32/freebsd32.h
+2-4sys/compat/freebsd32/freebsd32_misc.c
+12-143 files

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