Add overlooked parameters to Xvnc and x0vncserver man pages

There were a bunch of parameters that weren't properly added to the
man pages when the features were added. Make sure everything is
properly in sync.
diff --git a/unix/x0vncserver/x0vncserver.man b/unix/x0vncserver/x0vncserver.man
index da7d11d..5c8729e 100644
--- a/unix/x0vncserver/x0vncserver.man
+++ b/unix/x0vncserver/x0vncserver.man
@@ -58,6 +58,14 @@
 The default port is 5900.
 .
 .TP
+.B \-UseIPv4
+Use IPv4 for incoming and outgoing connections. Default is on.
+.
+.TP
+.B \-UseIPv6
+Use IPv6 for incoming and outgoing connections. Default is on.
+.
+.TP
 .B \-Log \fIlogname\fP:\fIdest\fP:\fIlevel\fP
 Configures the debug log settings.  \fIdest\fP can currently be \fBstderr\fP,
 \fBstdout\fP or \fBsyslog\fP, and \fIlevel\fP is between 0 and 100, 100 meaning
@@ -120,6 +128,11 @@
 also be in PEM format.
 .
 .TP
+.B \-GnuTLSPriority \fIpriority\fP
+GnuTLS priority string that controls the TLS session’s handshake algorithms.
+See the GnuTLS manual for possible values. Default is \fBNORMAL\fP.
+.
+.TP
 .B \-BlacklistThreshold \fIcount\fP
 The number of unauthenticated connection attempts allowed from any individual
 host before that host is black-listed.  Default is 5.
@@ -213,6 +226,13 @@
 adjusted to satisfy \fBMaxProcessorUsage\fP setting.  Default is 30.
 .
 .TP
+.B \-FrameRate \fIfps\fP
+The maximum number of updates per second sent to each client. If the screen
+updates any faster then those changes will be aggregated and sent in a single
+update to the client. Note that this only controls the maximum rate and a
+client may get a lower rate when resources are limited. Default is \fB60\fP.
+.
+.TP
 .B \-CompareFB \fImode\fP
 Perform pixel comparison on framebuffer to reduce unnecessary updates. Can
 be either \fB0\fP (off), \fB1\fP (always) or \fB2\fP (auto). Default is