v0.6.14 build 344 security FIX

After auditing the router's file system, it was found that /usr/sbin/curl writes a command-line history to /jffs/curllst with 666 (!) file permissions. This log file is also rotated and may exist as /jffs/curllst.1. There appears to be no way to stop this file from being generated/used, so the bash script empties the file after every curl execution with an echo -n > /jffs/curllst ;)