Update to 1.4

* Fix PR pkg/50358 partially using dynamic python library.
  However if your system has python in /usr/bin and your current
  working directory is not your home directory, your weechat
  reads its library files and dies.

Changelog:
Among the new features:

- add a parent name in options, display inherited values if null in /set output
- add option weechat.look.paste_auto_add_newline
- add /fifo command
- track real names using extended-join and WHO (IRC)
- add support of SNI (Server Name Indication) in SSL connection to IRC server
- add support of IRC "cap-notify" capability
- add IRC command /cap
- add hex dump of messages in raw buffer when debug is enabled for irc plugin
- add option relay.irc.backlog_since_last_message
- add option script.scripts.download_timeout
- add scripts to build Debian packages
- many bugs fixed.

(ryoon)