man*/: srcfix
Clean up in preparation for "MR sed".
Format only one man page cross reference per input line.
Begin parentheticals on their own input lines.
Also, groff 1.23.0's (and Plan 9 from User Space's) `MR` is not a font
style alternation macro; there is no "reversed" form as with `BR` and
`RB`. So when a man page cross reference must be immediately preceded
by punctuation, put that punctuation on the previous text line and use
the `\c` escape sequence to connect them.
Signed-off-by: "G. Branden Robinson" <g.branden.robinson@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>