New release notes: Logical CPUs for HTT now enabled using BIOS
settings, options IPFILTER requires options PFIL_HOOKS, last bits of
a.out compiler toolchain are gone, acpiconf(8) -i, asf(8), .snap
directory for snapshots, kdump(1) -p, last(1) -n, libwrap/tcpdchk(8)
support extended tcp_wrappers syntax, repquota(8) -n, savecore(8) -C,
uname(1) -i, hardware notes device trimmage, Turkish translation for
docs.

Modified release notes: Spell "Cronyx-Sigma" correctly in cx(4)
item, spell "FireWire" consistently, fix grammer in puc(4) item, move
uart(4) note from NIC to generic kernel section, spell "NetGraph"
consistently, fix typo in xe(4) note, dynamic linking note more
precise,

Deleted release notes: -pthread removed (this was reverted).

Other: Correct a reference to recent security advisories.

Approved by: re (implicitly)