Released netscript version 1.6.8.

addition of routing support(-R, -k, -j, and -J options), the $\ variable to send data directly to the route socket, the $" variable to only send data after an alloted amount of time, the -Q option to define socket options, the --interactive command line option to allow interactive use of netscript, reading of ~/.nsrc to to precurse any other interactive commands, the --list command line option to quickly list and execute rulesets, the $NS_PATH environmental variable to assist the --list option, the addition of a manual page, and MD5SUM validity check file, changed a couple rulesets to comply with the additions, and fixed some minor bugs, some of which could locally crash netscript.