Added NDT speed test client

Test:
 - web100clt client is available in DUT(ex400) on including ndt package

ndt/Makefile

@@ -0,0 +1,33 @@
+#
+# This is free software, See /COPYRIGHT for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=ndt
+PKG_VERSION:=3.6.4
+PKG_RELEASE:=3
+
+PKG_BUILD_DIR:=${BUILD_DIR}/ndt-$(PKG_VERSION)
+PKG_SOURCE:=ndt-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=http://software.internet2.edu/sources/ndt
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/ndt
+	CATEGORY:=Utilities
+	DEPENDS:=+libpthread +zlib
+	TITLE:=Network Testing Tool
+endef
+
+define Build/Compile/Default
+	$(MAKE) -C $(PKG_BUILD_DIR)
+endef
+
+define Package/ndt/install
+	$(INSTALL_DIR) $(1)/sbin
+	$(CP) $(PKG_BUILD_DIR)/src/web100clt $(1)/sbin/
+endef
+
+$(eval $(call BuildPackage,ndt))
+