Audit uniq(1)

Refactor the manpage and small style-changes in uniq.c.
Remove unnecessary "else", we catch argc > 2 earlier already.

uniq.1

@@ -1,4 +1,4 @@
-.Dd January 30, 2015
+.Dd March 17, 2015
 .Dt UNIQ 1
 .Os sbase
 .Sh NAME
@@ -8,8 +8,8 @@
 .Nm
 .Op Fl c
 .Op Fl d | u
-.Op Fl f Ar fields
-.Op Fl s Ar chars
+.Op Fl f Ar num
+.Op Fl s Ar num
 .Op Ar input Op Ar output
 .Sh DESCRIPTION
 .Nm
@@ -20,29 +20,24 @@ duplicate lines to the
 .Ar output
 file. If no
 .Ar input
-file is given,
+file is given
 .Nm
 reads from stdin. If no
 .Ar output
-file is given, then
+file is given
 .Nm
 writes to stdout.
 .Sh OPTIONS
 .Bl -tag -width Ds
 .It Fl c
-Prefixes each line with a count of its consecutive occurrences in the input.
-.It Fl d
-Suppresses non-duplicate lines (thus 'uniq -d' prints only duplicates).
-.It Fl u
-Suppresses non-unique lines (thus 'uniq -u' prints only uniques).
-.It Fl f Ar fields
+Prefix each line with the number of consecutive occurrences in
+.Ar input .
+.It Fl d | Fl u
+Print duplicate | unique lines only.
+.It Fl f Ar num | Fl s Ar num
 Ignore the first
-.Ar fields
-in each input line when doing comparisons.
-.It Fl s Ar chars
-Ignore the first
-.Ar chars
-characters in each input line when doing comparisons.
+.Ar num
+fields | characters in each input line when doing comparisons.
 .El
 .Sh STANDARDS
 The