no more syscall.2;

minor macro cleanup

minor wording improvement from Stephen Gregoratto

remove systrace

remove the remaining mentions of sys/compat/*; ok deraadt@ millert@ jmc@

Reduce instances of `` '' in manuals.

troff displays these as typographic quotes, but nroff implementations
almost always print them literally, which rarely has the intended effect
with modern fonts

Reduce instances of `` '' in manuals.

troff displays these as typographic quotes, but nroff implementations
almost always print them literally, which rarely has the intended effect
with modern fonts, even in stock xterm.

These uses of `` '' can be replaced either with more semantic alternatives
or with Dq, which prints typographic quotes in a UTF-8 locale (but will
automatically fall back to `` '' in an ASCII locale).

improvements and ok schwarze@

show more ...

Reference mi_syscall() and mi_syscall_return() and syscall_mi.h
Update userret() arguments

no longer any need to quote macro lines with >9 args;
From: Jan Stary

- put the Os macro in the correct place
- in one instance, .Dr -> .Dq

convert to new .Dd format;

internal sysctl functions and etc

typos from Jonathon Gray;

typos from Jared Yanovich;

remove extra "for"
ok jmc@

various tweaks;
ok mickey@

rename VOP_LOOKUP.9 into vnodeops.9 for nicer xreffing.
a few pages i wrote being high on acetyl salicylic acid.
vfs(9) from netbsd.