The bar item "buffer_nicklist_count" is now the number of displayed nicks
only (not groups).
New bar items:
- "buffer_nicklist_count_groups": number of groups displayed
- "buffer_nicklist_count_all": number of nicks and groups displayed
This allows the input callback function for a buffer to receive multiple
lines at once, instead of the message being split on newline before
being sent to the callback. It adds a new flag, input_multiline, to
control this. This flag defaults to 0 which is the current behavior.
Sébastien Helleu