do_link fails when local_directory ends with slash

[czgarrett]

I'm on Mac OS X, so perhaps it's related to that.

I had an SVN external that ended with a slash, e.g. /public/service_support/

When local_directory is assigned, the directory is cleaned up with sed to remove the first slash, but not the trailing slash, so it produces:

public/service_support/

This then fails in do_link because ln doesn't like the trailing slash.

To fix, I piped through a second sed command, like so:

local_directory="$(echo ${words[0]} | sed 's,^/,,' | sed 's,/$,,')"