httpd: do not clear environment
mount: mount helpers support (by Vladimir Dronnikov <dronnikov@gmail.ru>)

diff --git a/util-linux/Config.in b/util-linux/Config.in
index c910813..107382f 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -360,6 +360,16 @@
 	  NFS filesystems.  Most people using BusyBox will also want to enable
 	  the 'mount' utility.
 
+config FEATURE_MOUNT_HELPERS
+	bool "Support mount helpers"
+	default n
+	depends on MOUNT
+	help
+	  Enable mounting of virtual file systems via external helpers.
+	  E.g. mount obexfs#-b00.11.22.33.44.55 /mnt will in effect call
+	  obexfs -b00.11.22.33.44.55 /mnt
+	  The idea is to use such virtual filesystems in /etc/fstab
+
 config FEATURE_MOUNT_NFS
 	bool "Support mounting NFS file systems"
 	default n