Fix excessive white space in manpages.

In nroff manpages, a blank line adds vertical white space.  When this is
followed by another command that also starts a new paragraph, the result
is a vertical skip twice as big as the normal inter-paragraph gap.  The
solution is to use a line that contains just "." for white space within
the manpage, instead of a blank line.  The resulting manpages look better.

1 files changed, 8 insertions, 8 deletions

diff --git a/lib/vlog.man b/lib/vlog.man
index 882793164..ca895b15a 100644
--- a/lib/vlog.man
+++ b/lib/vlog.man
@@ -1,42 +1,42 @@
 .TP
 \fB-v\fImodule\fR[\fB:\fIfacility\fR[\fB:\fIlevel\fR]], \fB--verbose=\fImodule\fR[\fB:\fIfacility\fR[\fB:\fIlevel\fR]]
-
+.
 Sets the logging level for \fImodule\fR in \fIfacility\fR to
 \fIlevel\fR:
-
+.
 .RS
 .IP \(bu
 \fImodule\fR may be any valid module name (as displayed by the
 \fB--list\fR action on \fBovs\-appctl\fR(8)), or the special name
 \fBANY\fR to set the logging levels for all modules.
-
+.
 .IP \(bu
 \fIfacility\fR may be \fBsyslog\fR, \fBconsole\fR, or \fBfile\fR to
 set the levels for logging to the system log, the console, or a file
 respectively, or \fBANY\fR to set the logging levels for both
 facilities.  If it is omitted, \fIfacility\fR defaults to \fBANY\fR.
-
+.IP
 Regardless of the log levels set for \fBfile\fR, logging to a file
 will not take place unless \fB--log-file\fR is also specified (see
 below).
-
+.
 .IP \(bu 
 \fIlevel\fR must be one of \fBemer\fR, \fBerr\fR, \fBwarn\fR,
 \fBinfo\fR, or
 \fBdbg\fR, designating the minimum severity of a message for it to be
 logged.  If it is omitted, \fIlevel\fR defaults to \fBdbg\fR.
 .RE
-
+.
 .TP
 \fB-v\fR, \fB--verbose\fR
 Sets the maximum logging verbosity level, equivalent to
 \fB--verbose=ANY:ANY:dbg\fR.
-
+.
 .TP
 \fB-vPATTERN:\fIfacility\fB:\fIpattern\fR, \fB--verbose=PATTERN:\fIfacility\fB:\fIpattern\fR
 Sets the log pattern for \fIfacility\fR to \fIpattern\fR.  Refer to
 \fBovs\-appctl\fR(8) for a description of the valid syntax for \fIpattern\fR.
-
+.
 .TP
 \fB--log-file\fR[\fB=\fIfile\fR]
 Enables logging to a file.  If \fIfile\fR is specified, then it is