Specify path of output directory [feature request]

[sjackman]

I'd like to specify the path to the output directory. I realize you can specify a path on the command line, which changes the location of the output directory and the location of the config files and the directory in which the target function is run. I'd like to change just the name of output. My work around is to use a symlink from the desired name to output, which is easy enough.