FreeBSD/src f6eccf9 (r353485)sys/kern kern_thread.c subr_epoch.c, sys/sys proc.h

Since EPOCH_TRACE had been moved to opt_global.h, we don't need to waste
extra space in struct thread.
DeltaFile
+4-0sys/kern/kern_thread.c
+2-0sys/kern/subr_epoch.c
+2-0sys/sys/proc.h
+8-03 files

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