multipath-tools: fix mandoc errors/warnings in man pages

Fix the following errors and warnings reported by mandoc linting:
$ mandoc -W all -T lint man_page.X | grep -v "STYLE: input text line longer than 80 bytes"

mandoc: ./libmpathpersist/mpath_persistent_reserve_in.3:22:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./libmpathpersist/mpath_persistent_reserve_out.3:22:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./mpathpersist/mpathpersist.8.in:172:2: WARNING: skipping paragraph macro: PP after SH
mandoc: ./mpathpersist/mpathpersist.8.in:215:2: WARNING: skipping paragraph macro: PP after SH
mandoc: ./multipathd/multipathc.8:19:15: STYLE: whitespace at end of input line
mandoc: ./multipathd/multipathd.8.in:573:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./multipathd/multipathd.8.in:573:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./multipath/multipath.conf.5.in:130:2: ERROR: skipping end of block that is not open: RE
mandoc: ./multipath/multipath.conf.5.in:1979:2: ERROR: skipping end of block that is not open: RE
mandoc: ./multipath/multipath.conf.5.in:89:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./multipath/multipath.conf.5.in:131:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./multipath/multipath.conf.5.in:130:2: WARNING: skipping paragraph macro: br at the end of SH
mandoc: ./multipath/multipath.conf.5.in:1577:2: WARNING: skipping paragraph macro: PP empty
mandoc: ./multipath/multipath.conf.5.in:1770:2: WARNING: skipping paragraph macro: PP empty

Cc: Martin Wilck <mwilck@suse.com>
Cc: Benjamin Marzinski <bmarzins@redhat.com>
Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
Cc: DM_DEVEL-ML <dm-devel@lists.linux.dev>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Reviewed-by: Martin Wilck <mwilck@suse.com>

Author: xosevp

libmpathpersist/mpath_persistent_reserve_in.3

@@ -19,7 +19,6 @@ mpath_persistent_reserve_in \- send PRIN command to DM device
 .B #include <mpath_persist.h>
 .P
 .BI "int mpath_persistent_reserve_in" "(int fd, int rq_servact, struct prin_resp *resp, int noisy, int verbose)"
-.P
 .
 .
 .\" ----------------------------------------------------------------------------

libmpathpersist/mpath_persistent_reserve_out.3

@@ -19,7 +19,6 @@ mpath_persistent_reserve_out \- send PROUT command to DM device
 .B #include <mpath_persist.h>
 .P
 .BI "int mpath_persistent_reserve_out" "(int fd, int rq_servact, int rq_scope, unsigned int rq_type, struct prout_param_descriptor *paramp, int noisy, int verbose)"
-.P
 .
 .
 .\" ----------------------------------------------------------------------------

mpathpersist/mpathpersist.8.in

@@ -169,7 +169,6 @@ PR In: maximum allocation length. LEN is a decimal number between 0 and 8192.
 .SH EXAMPLE
 .\" ----------------------------------------------------------------------------
 .
-.PP
 Register the key \(dq123abc\(dq for the /dev/mapper/mpath9 device:
 .RS
 \fBmpathpersist --out --register --param-sark=\fI123abc /dev/mapper/mpath9\fR
@@ -212,7 +211,6 @@ Remove current reservation, and unregister all registered keys from all I_T nexu
 .SH BATCH FILES
 .\" ----------------------------------------------------------------------------
 .
-.PP
 The option \fI--batch-file\fR (\fI-f\fR) sets an input file to be processed
 by \fBmpathpersist\fR. Grouping commands in batch files can provide a speed
 improvement in particular on large installments, because \fBmpathpersist\fR

multipath/multipath.conf.5.in

@@ -88,7 +88,6 @@ the indentation shown in the above example is helpful for human readers but
 not mandatory.
 .LP
 .
-.LP
 .B Note on regular expressions:
 The \fI@CONFIGFILE@\fR syntax allows many attribute values to be specified as POSIX
 Extended Regular Expressions (see \fBregex\fR(7)). These regular expressions
@@ -127,8 +126,6 @@ vendor, product, and revision.
 .B overrides
 This section defines values for attributes that should override the
 device-specific settings for all devices.
-.RE
-.LP
 .
 .
 .\" ----------------------------------------------------------------------------
@@ -1620,7 +1617,6 @@ section:
 .B ghost_delay
 .RE
 .PD
-.LP
 .
 .
 .\" ----------------------------------------------------------------------------
@@ -1819,7 +1815,6 @@ section:
 .B all_tg_pt
 .RE
 .PD
-.LP
 .
 .
 .\" ----------------------------------------------------------------------------
@@ -2034,7 +2029,6 @@ as integrity failures or congestion with so-called Fabric Performance
 Impact Notifications (FPINs).On receiving the fpin notifications through ELS
 multipathd will move the affected path and port states to marginal.
 .
-.RE
 .LP
 See the documentation
 of the individual options above for details.

multipathd/multipathc.8

@@ -16,7 +16,7 @@ multipathc \- Interactive client for multipathd
 .SH SYNOPSIS
 .\" ----------------------------------------------------------------------------
 .
-.B multipathc 
+.B multipathc
 .RB [\|
 .IR timeout
 .RB \|]

multipathd/multipathd.8.in

@@ -570,7 +570,6 @@ The device appears usable, but it being delayed for marginal path checking.
 .I undef
 The device either is not part of a multipath device, or its path checker has
 not yet run.
-.PP
 .RE
 .TP
 .B %s