Document the new "-v" option for the gssd daemon.

This is a content change.

MFC after:	2 weeks

usr.sbin/gssd/gssd.8

@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd December 30, 2012
+.Dd June 5, 2013
 .Dt GSSD 8
 .Os
 .Sh NAME
@@ -34,6 +34,7 @@
 .Sh SYNOPSIS
 .Nm
 .Op Fl d
+.Op Fl v
 .Op Fl s Ar dir-list
 .Op Fl c Ar file-substring
 .Op Fl r Ar preferred-realm
@@ -49,6 +50,16 @@ Run in debug mode.
 In this mode,
 .Nm
 will not fork when it starts.
+.It Fl v
+Run in verbose mode.
+In this mode,
+.Nm
+will log activity messages to syslog using LOG_INFO | LOG_DAEMON or to
+stderr, if the
+.Fl d
+option has also been specified.
+The minor status is logged as a decimal number, since it is actually a
+Kerberos return status, which is signed.
 .It Fl s Ar dir-list
 Look for an appropriate credential cache file in this list of directories.
 The list should be full pathnames from root, separated by ':' characters.
@@ -79,7 +90,8 @@ by kernel GSS-API services.
 .Sh EXIT STATUS
 .Ex -std
 .Sh SEE ALSO
-.Xr gssapi 3
+.Xr gssapi 3 ,
+.Xr syslog 3
 .Sh HISTORY
 The
 .Nm