partx: Improve the typesetting of the manual

  Add a space character around '|' (means "or")

  Add "(hyphen-minus)" after "\-" to show character name for input

  Change '\-\-' to '\en', when it is used as a dash (pause, separation)

  Add a comma before "or" in a series of words (3 or more)

  Change '-' to '\(en' (an en-dash), if it means a range

  Protect a full stop (.), that begins or ends a string, with \&

  Change '--' to '\-\-', if it indicates an option

  Change '-' to '\-', if it indicates an option

  Change '-' to '\-', if means a minus

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
raw: Improve the typesetting of the manual

  Remove space at end of lines

  Change '-' to '\-', if it indicates an option

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
sfdisk: Improve the typesetting of the manual

  FIXME
  Units KB, MB, GB, etc. are ambiguous (not necessarily used here)
  Prefixes kilo, mega, giga, etc. are ambiguous with the unit byte (ditto)

  Change ' \- ' to ' \(en ' (an en-dash), if it is a dash (pause,
separation)

  Change ' - ' to ' \(en ' (an en-dash), if it is a dash (pause,
separation)

  Change '\-' to '-' (code "hyphen-minus", rendered with the glyph
hyphen in troff), if it is a part of a compound name.
  A minus is not used in words.  People using UTF-8 and copy-and-paste
can(?) (may?) use "info", "man --ascii" or the command "man" should
have an option to display the '-' ("hyphen-minus") in names of options
with the code (character name) "hyphen-minus" (u002D) instead of
"u2010" (code (character) name "hyphen").

  Change '-' to '\-', if it indicates an option

  Protect a full stop (.), that begins or ends a string, with \&

  Correct space between sentences to two space characters (or begin
each sentence on a new line).

  Change '--' to '\-\-', if it indicates an option

  Add \~ (no-break space) around '|' (means "or")

  Change ' -- ' to ' \(en ' (an en-dash), if it is a dash (pause,
separation)

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
swaplabel: Improve the typesetting of the manual

  Change macro 'IR' to 'I' if it has only one (italic) argument

  Remove space at end of lines

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>