Explicitly say that this is an internal library which is intended to be

used within FreeBSD base system only, and discourage user applications
from using it.  User applications should use the expat version from the
ports/package collection.

Reviewed by:	simon (earlier version)
MFC after:	2 weeks

lib/libexpat/libbsdxml.3

@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"/
-.Dd May 5, 2008
+.Dd December 12, 2009
 .Dt LIBBSDXML 3
 .Os
 .Sh NAME
@@ -38,6 +38,15 @@ The
 .Nm
 library is a verbatim copy of the eXpat XML library version 2.0.1.
 .Pp
+The
+.Nm
+library is intended to use within the
+.Fx
+base system only.
+Use of the
+.Nm
+library for other purposes is not supported and discouraged.
+.Pp
 To avoid version and autoconfiguration issues, the library has been
 renamed to
 .Nm