[beast/win32] Added birnetos.hh to the installed headers.

[Stefan Westerfeld <stw src gnome org>]

commit ece136e7a1cd0b2182addb3d8a248b3cc66255c6
Author: Stefan Westerfeld <stefan space twc de>
Date:   Fri Aug 28 11:37:33 2009 +0200

    Added birnetos.hh to the installed headers.

 birnet/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/birnet/Makefile.am b/birnet/Makefile.am
index 9757012..78475f7 100644
--- a/birnet/Makefile.am
+++ b/birnet/Makefile.am
@@ -22,6 +22,7 @@ birnet_headers = $(strip 		\
 	birnetmath.hh			\
 	birnetutf8.hh			\
 	birnetutils.hh			\
+        birnetos.hh                     \
 )
 birnet_sources = $(strip 		\
 	birnetthreadimpl.cc		\