Tab closing order

[Jorge Arellano Cid]

Hi there,

Just committed a patch that improves the workflow for those of
use that make regular use of tabbed browsing.

Now, upon closing the active tab, the browser focuses the
previously visited one (before it was just an adjacent one).
Dillo now remembers the full focus history of them.

I hope you like it as much as I do. ;)

[corvid]

The valgrind logs found something with this:
http://starurchin.org/dillo/valgrind/b8b4ffc070d8c2dc439c384f0b9d7a57fe5ee6b2.html

I think line 337 in Jeremy's dillo corresponds to 326 in stock dillo, which
would be "if (btn->focus_num() > fbtn->focus_num())", so probably tabs that
have never been focused just need a focus_num of 0 or something...

[Jorge Arellano Cid]

Post by corvid
http://starurchin.org/dillo/valgrind/b8b4ffc070d8c2dc439c384f0b9d7a57fe5ee6b2.html
I think line 337 in Jeremy's dillo corresponds to 326 in stock dillo, which
would be "if (btn->focus_num() > fbtn->focus_num())", so probably tabs that
have never been focused just need a focus_num of 0 or something...

Patch committed.