patch: binding to add bookmark

[corvid]

Another simple one from the bug tracker. I don't use bookmarks heavily
enough to have much need for this, but I can see that it could be
convenient.

[Jorge Arellano Cid]

Post by corvid
Another simple one from the bug tracker. I don't use bookmarks heavily
enough to have much need for this, but I can see that it could be
convenient.

It looks like the user wants the feature as a workaround,
so he can quickly bookmark the tabs he has open, with a view
to recover them later.

See BUG #1136, #1137 and #1139.

IMHO, it would be great to contact the submitter to understand the
real problem (or use case) he has, and try to aim directly at it.