vsftpd: bump to version 2.3.4

Bump vsftpd to version 2.3.4
Fixes build issues with binutils 2.22+ and changed upstream URL

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/vsftpd/vsftpd.mk

@@ -3,10 +3,9 @@
 # vsftpd
 #
 #############################################################
-VSFTPD_VERSION = 2.3.2
-VSFTPD_SOURCE = vsftpd-$(VSFTPD_VERSION).tar.gz
-VSFTPD_SITE = ftp://vsftpd.beasts.org/users/cevans
 
+VSFTPD_VERSION = 2.3.4
+VSFTPD_SITE = https://security.appspot.com/downloads
 VSFTPD_LIBS = -lcrypt
 
 define VSFTPD_ENABLE_SSL