irc: tcp-read-timeout not paramaterized everywhere that it needs to be

[acharlton]

The parameter tcp-read-timeout is correctly set to irc:connection-reconnect-timeout in irc:connect, but it isn’t elsewhere. Notably, the procedure read-input, which calls read-line, should have a parametrization of tcp-read-timeout. Otherwise, the read-line times-out after the tcp default of one minute which is quite a bit shorter than desirable (the default irc:connection-reconnect-timout is one hour).

read-input should be the only (additional) location where tcp-read-timout must be set. Higher level procedures (irc:listen, irc:run-message-loop) all read the input port through this procedure. The attached patch does this.

[felix winkelmann]

Should be fixed in 1.9.8.