Need a better timeout management on sozuctl

[Keksoj]

A number of issues for 0.14 are linked to inaproppriate behaviour of sozuctl:

• #718
• #708
• #631

Before fully addressing those issues, we need to address the timeout management of sozuctl, which is done with a macro for simple queries, or is not performed at all.

We need a comprehensive implementation of timeouts.

[Keksoj]

Even after:

• #724

the timeouts don't really work. The read_channel_message_with_timeout function hangs when receiving no response from the server.

[Keksoj]

closed by #821