FreeBSD/src 1a3c1f0 (r256094)sys/boot/forth loader.conf, sys/conf files.amd64 files.i386

Snapshot.

Looking pretty good; this mostly works now. New code includes:

* Read cached entropy at startup, both from files and from loader(8) preloaded entropy. Failures are soft, but announced. Untested.

* Use EVENTHANDLER to do above just before we go multiuser. Untested.
DeltaFile
+91-0sys/dev/random/rwfile.c
+57-0sys/dev/random/random_harvestq.c
+24-13sys/dev/random/live_entropy_sources.c
+30-0sys/dev/random/rwfile.h
+15-0sys/dev/random/ivy.c
+11-0sys/boot/forth/loader.conf
+4-0sys/sys/eventhandler.h
+1-2sys/sys/random.h
+2-0sys/dev/random/randomdev_soft.c
+2-0sys/conf/files.amd64
+2-0sys/kern/init_main.c
+2-0sys/dev/random/live_entropy_sources.h
+2-0sys/conf/files.i386
+1-0sys/conf/files
+244-1514 files

UnifiedSplitRaw