Please change the url of unix-opts, trivial-update, cl-readline and cl-ansi-term

[vindarel]

Hi,

These projects recently changed hands:

• https://github.com/mrkkrp/unix-opts is now https://github.com/libre-man/unix-opts
• https://github.com/mrkkrp/trivial-update is now https://github.com/cbaggers/trivial-update
• https://github.com/mrkkrp/cl-readline is now https://github.com/vindarel/cl-readline
• https://github.com/mrkkrp/cl-ansi-term is now https://github.com/vindarel/cl-ansi-term

Regards

cc @libre-man, @cbaggers and @mrkkrp