We suport internal SEDES function older than 82575.
wm(4): Add internal SERDES support older than 82575.
Whitespace.
Fix an off by one bug in apropos.
The bug is in the html output where some garbage characters are
seen in the context match output.

From Abhinav Upadhyay in PR 49058.
import from FreeBSD
PR/49053: Kamil Rytarowski: Import timeout(1) from FreeBSD
mention timeout
add timeout(1)
Byte access is only used in the midi code.
Add OPC31_OR
Deal with the code LLVM generates for stubs.
restore splsoftnet() in various usrreqs that were removed during the PRU
splits.  we will properly review removal after the PRU split work is
complete.
Punctuation, markup, whitespace improvements.
Return a valid error in rumpusb_root_intr_start on failure.
Let's believe the spec when it says "must".