package/nss-mdns: do not overwrite user's nsswitch.conf

Instead of over-writing the nsswitch.conf file (which may already contain
user's specific configuration if it comes from a custom skeleton), just
replace the 'hosts' line.

Remove now-useless custom nsswitch.conf file.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/nss-mdns/nss-mdns.mk

@@ -10,7 +10,8 @@ NSS_MDNS_SITE=http://0pointer.de/lennart/projects/nss-mdns
 NSS_MDNS_CONF_OPT += --localstatedir=/var
 
 define NSS_MDNS_INSTALL_CONFIG
-	$(INSTALL) -D -m 0664 package/nss-mdns/nsswitch.conf $(TARGET_DIR)/etc/nsswitch.conf
+	sed -r -i -e 's/^(hosts:[[:space:]]+).*/\1files mdns4_minimal [NOTFOUND=return] dns mdns4/' \
+	    $(TARGET_DIR)/etc/nsswitch.conf
 endef
 
 NSS_MDNS_POST_INSTALL_TARGET_HOOKS += NSS_MDNS_INSTALL_CONFIG

package/nss-mdns/nsswitch.conf

@@ -1,15 +0,0 @@
-# /etc/nsswitch.conf
-
-passwd:         compat
-group:          compat
-shadow:         compat
-
-hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
-networks:       files
-
-protocols:      db files
-services:       db files
-ethers:         db files
-rpc:            db files
-
-netgroup:       nis