Add proposed ChangeLog for --brittle, and also update the man page.

ChangeLog

@@ -1,3 +1,8 @@
+  211.  [func]		shane
+	Implement "--brittle" option, which causes the server to exit
+        if any of BIND 10's processes dies.
+	(Trac #788, git xxx)
+
   210.  [bug]		jerry
 	src/bin/auth: fixed a bug where type ANY queries don't provide
 	additional glue records for ANSWER section.

src/bin/bind10/bind10.8

@@ -22,7 +22,7 @@
 bind10 \- BIND 10 boss process
 .SH "SYNOPSIS"
 .HP \w'\fBbind10\fR\ 'u
-\fBbind10\fR [\fB\-m\ \fR\fB\fIfile\fR\fR] [\fB\-n\fR] [\fB\-u\ \fR\fB\fIuser\fR\fR] [\fB\-v\fR] [\fB\-\-msgq\-socket\-file\ \fR\fB\fIfile\fR\fR] [\fB\-\-no\-cache\fR] [\fB\-\-user\ \fR\fB\fIuser\fR\fR] [\fB\-\-pretty\-name\ \fR\fB\fIname\fR\fR] [\fB\-\-verbose\fR]
+\fBbind10\fR [\fB\-m\ \fR\fB\fIfile\fR\fR] [\fB\-n\fR] [\fB\-u\ \fR\fB\fIuser\fR\fR] [\fB\-v\fR] [\fB\-\-msgq\-socket\-file\ \fR\fB\fIfile\fR\fR] [\fB\-\-no\-cache\fR] [\fB\-\-user\ \fR\fB\fIuser\fR\fR] [\fB\-\-pretty\-name\ \fR\fB\fIname\fR\fR] [\fB\-\-brittle\fR] [\fB\-\-verbose\fR]
 .SH "DESCRIPTION"
 .PP
 The
@@ -66,6 +66,14 @@ or
 \fBbind10\fR\&.
 .RE
 .PP
+\fB\-\-brittle\fR
+.RS 4
+Shutdown if any of the child processes of 
+\fBbind10\fR
+exit\&. This is intended to help developers debug the server, and should
+not be used in production.
+.RE
+.PP
 \fB\-v\fR, \fB\-\-verbose\fR
 .RS 4
 Display more about what is going on for