update lftp to latest stable version

package/lftp/Makefile

@@ -4,9 +4,9 @@
 include $(ADK_TOPDIR)/rules.mk
 
 PKG_NAME:=		lftp
-PKG_VERSION:=		4.5.2
+PKG_VERSION:=		4.6.2
 PKG_RELEASE:=		1
-PKG_HASH:=		34e5da2b2b08c2a96bc58ae5fa81372fb6cb96dc856f5d0bcecf77e974d04746
+PKG_HASH:=		1e61d5c94b06c333309185e86cfce0729e45e3f69f7496c58d61093b135c8bb9
 PKG_DESCR:=		ftp and http client
 PKG_SECTION:=		net/http
 PKG_DEPENDS:=		libncurses libexpat libstdcxx