[adv_windowlist] Make the statusbar leader text configurable

[madduck]

This introduces the settings awl_sb_leader, which defaults to the current "Awl: " text and can be henceforth overridden to configure (or hide) the status bar leader text.

Signed-off-by: martin f. krafft madduck@madduck.net

[madduck]

This isn't complete:

< Nei[m]> madduck: there is somewhere code that calculates mouse coordinates
< Nei[m]> You'd have to account for the configurable setting there as well

Can't turn to that now though…

[madduck]

I've stared at this for a bit now, but I can't figure it out. This is black voodoo magic. I hope @ailin-nemui can provide some guidance.

[madduck]

@ailin-nemui Is this was awl_shared_sbar is all about? I.e. I just need to add to the right-hand side the length of the header?

[ailin-nemui]

closing this and moving it to ailin-nemui/irssi-adv_windowlist#1