bird2: use official example config file

Using the openwrt example config (which seems to be a clone of the
official example2 config) leads to the following error:

    bird: /etc/bird.conf:138:15 syntax error, unexpected '/'

In addition, the previous configuration seems to me to be too
case-specific and cannot really be used as a template for a fresh
configuration.

Signed-off-by: Martin Schiller <[email protected]>

bird2/Makefile

@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=bird2
 PKG_VERSION:=2.15.1
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=bird-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=ftp://bird.network.cz/pub/bird
@@ -113,7 +113,7 @@ define Package/bird2/install
 	$(INSTALL_DIR)  $(1)/usr/sbin
 	$(INSTALL_BIN)  $(PKG_BUILD_DIR)/bird $(1)/usr/sbin/
 	$(INSTALL_DIR)  $(1)/etc
-	$(INSTALL_DATA) ./files/bird.conf $(1)/etc/
+	$(INSTALL_DATA) $(PKG_BUILD_DIR)/doc/bird.conf.example $(1)/etc/bird.conf
 	$(INSTALL_DIR)  $(1)/etc/init.d
 	$(INSTALL_BIN)  ./files/bird.init $(1)/etc/init.d/bird
 endef