FreeBSD/src a4f02d5 (r340642)lib/libthr/thread thr_init.c

Make libthr(3) use sysconf(_SC_NPROCESSORS_CONF); this shaves off
two calls to sysctl(2) from the binary startup.

Reviewed by:    kib
MFC after:      2 weeks
Sponsored by:   DARPA, AFRL
Differential Revision:  https://reviews.freebsd.org/D18046
DeltaFile
+3-2lib/libthr/thread/thr_init.c
+3-21 files

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