doc: Fix some warnings from "test-groff" for manuals

Source is current git content.

Output is from: test-groff -b -e -mandoc -T utf8 -rF0 -t -w w -z

  [ "test-groff" is a developmental version of "groff" ]

Input file is ././disk-utils/sfdisk.8

troff: backtrace: file '<./disk-utils/sfdisk.8>':67
troff: <./disk-utils/sfdisk.8>:67: warning: trailing space

Input file is ././misc-utils/kill.1

troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':133: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: macro 'mF' not defined
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':134: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: number register 'mE' not defined
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':134: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: bad font number
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':135: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':167
troff: <./misc-utils/kill.1>:167: warning: number register 'sP' not defined
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-ext.tmac':134: macro 'EE'
troff: backtrace: file '<./misc-utils/kill.1>':170
troff: <./misc-utils/kill.1>:170: warning: bad font number

Input file is ././sys-utils/ipcs.1

<./sys-utils/ipcs.1>:103 (macro BR): only 1 argument, but more are expected

Input file is ././sys-utils/mount.8

<./sys-utils/mount.8>:68 (macro RB): only 1 argument, but more are expected
troff: backtrace: '/home/bg/git/groff/build/s-tmac/an-old.tmac':467: macro 'RB'
troff: backtrace: file '<./sys-utils/mount.8>':68
troff: <./sys-utils/mount.8>:68: warning [p 1, 3.5i]: can't break line
an-old.tmac: <./sys-utils/mount.8>:201 (.RE): warning: extra .RE or .RS is missing before it; "an-RS-open" is 0.
<./sys-utils/mount.8>:453 (macro BR): only 1 argument, but more are expected
<./sys-utils/mount.8>:500 (macro BR): only 1 argument, but more are expected
<./sys-utils/mount.8>:1050 (macro BR): only 1 argument, but more are expected

Input file is ././sys-utils/setpriv.1

<./sys-utils/setpriv.1>:17 (macro BR): only 1 argument, but more are expected
<./sys-utils/setpriv.1>:154 (macro BR): only 1 argument, but more are expected
<./sys-utils/setpriv.1>:166 (macro BR): only 1 argument, but more are expected

Input file is ././sys-utils/umount.8

<./sys-utils/umount.8>:145 (macro IR): only 1 argument, but more are expected

Input file is ././sys-utils/unshare.1

<./sys-utils/unshare.1>:266 (macro BR): only 1 argument, but more are expected

[kzak@redhat.com: - add .RS to fix extra .RE in mount.8]

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Signed-off-by: Karel Zak <kzak@redhat.com>

disk-utils/sfdisk.8

@@ -64,7 +64,7 @@ uses BLKRRPART (reread partition table) ioctl to make sure that the device is
 not used by system or other tools (see also \-\-no-reread).  It's possible that
 this feature or another sfdisk activity races with \fBudevd\fR.  The recommended way
 how to avoid possible collisions is to use \fB\-\-lock\fR option.
-The exclusive lock will cause udevd to skip the event handling on the device. 
+The exclusive lock will cause udevd to skip the event handling on the device.
 .PP
 The sfdisk prompt is only a hint for users and a displayed partition number does
 not mean that the same partition table entry will be created (if -N not

misc-utils/kill.1

@@ -164,7 +164,7 @@ the signals QUIT, TERM and KILL in sequence and waits for 1000
 milliseconds between sending the signals:
 .IP
 .in +4n
-.EE
+.EX
 kill \-\-verbose \-\-timeout 1000 TERM \-\-timeout 1000 KILL \e
         \-\-signal QUIT 12345
 .EE

sys-utils/ipcs.1

@@ -100,7 +100,7 @@ The current implementation of
 obtains information about available IPC resources by parsing the files in
 .IR /proc/sysvipc .
 Before util-linux version v2.23, an alternate mechanism was used: the
-.BR IPC_STAT
+.B IPC_STAT
 command of
 .BR msgctl (2),
 .BR semctl (2),

sys-utils/mount.8

@@ -61,11 +61,12 @@ mount \- mount a filesystem
 .I device mountpoint
 .LP
 .B mount
-.RB \-\-bind | \-\-rbind | \-\-move
+.BR \-\-bind | \-\-rbind | \-\-move
 .I olddir newdir
 .LP
 .B mount
-.RB \-\-make\-{shared|slave|private|unbindable|rshared|rslave|rprivate|runbindable}
+.BR \-\-make\- { shared | slave | private | unbindable | rshared | \
+rslave | rprivate | runbindable }
 .I mountpoint
 .SH DESCRIPTION
 All files accessible in a Unix system are arranged in one big
@@ -166,6 +167,7 @@ and adding or removing a device can cause changes in names.
 This is the reason why it's
 strongly recommended to use filesystem or partition identifiers like UUID or
 LABEL. Currently supported identifiers (tags):
+.RS
 .TP
 LABEL=\fIlabel\fR
 Human readable filesystem identifier. See also \fB\-L\fR.
@@ -450,7 +452,7 @@ a second place by using:
 Note that the filesystem mount options maintained by the kernel will remain the same as those
 on the original mount point.  The userspace mount options (e.g., _netdev) will not be copied
 by
-.BR mount
+.B mount
 and it's necessary to explicitly specify the options on the
 .B mount
 command line.
@@ -497,7 +499,7 @@ filesystem-specific flags) are silently ignored.  It's impossible to change moun
 options recursively (for example with \fB\-o rbind,ro\fR).
 
 Since util-linux 2.31,
-.BR mount
+.B mount
 ignores the \fBbind\fR flag from
 .I /etc/fstab
 on a
@@ -1047,7 +1049,7 @@ Verbose mode.
 .TP
 .BR \-w , " \-\-rw" , " \-\-read\-write"
 Mount the filesystem read/write.  Read-write is the kernel default and the
-.BR mount
+.B mount
 default is to try read-only if the previous mount syscall with read-write flags
 on write-protected devices of filesystems failed.
 .sp

sys-utils/setpriv.1

@@ -14,7 +14,7 @@ In comparison to
 .BR su (1)
 and
 .BR runuser (1),
-.BR setpriv
+.B setpriv
 neither uses PAM, nor does it prompt for a password.
 It is a simple, non-set-user-ID wrapper around
 .BR execve (2),
@@ -151,7 +151,7 @@ credentials to remedy that situation.
 .BI \-\-selinux\-label " label"
 Request a particular SELinux transition (using a transition on exec, not
 dyntrans).  This will fail and cause
-.BR setpriv
+.B setpriv
 to abort if SELinux is not in use, and the transition may be ignored or cause
 .BR execve (2)
 to fail at SELinux's whim.  (In particular, this is unlikely to work in
@@ -163,7 +163,7 @@ This is similar to
 .BI \-\-apparmor\-profile " profile"
 Request a particular AppArmor profile (using a transition on exec).  This will
 fail and cause
-.BR setpriv
+.B setpriv
 to abort if AppArmor is not in use, and the transition may be ignored or cause
 .BR execve (2)
 to fail at AppArmor's whim.

sys-utils/umount.8

@@ -142,7 +142,7 @@ or special file representing that namespace.
 switches to the namespace when it reads
 .IR /etc/fstab ,
 writes
-.IR /etc/mtab
+.I /etc/mtab
 (or writes to
 .IR /run/mount )
 and calls

sys-utils/unshare.1

@@ -263,7 +263,7 @@ and that a new
 filesystem is mounted that contains information corresponding to the new
 PID namespace.
 When the
-.BR readlink
+.B readlink
 command terminates, the new namespaces are automatically torn down.
 .PP
 .in +4n