Update sysutils/fabric to 1.1.1

Upstream changes highlights:

Many, many bugfixes.

In release 1.1, highlights are

    * #76: New-style tasks have been added. With the addition of the task
decorator and the Task class, you can now "opt-in" and explicitly mark task
functions as tasks, and Fabric will ignore the rest. The original behavior (now
referred to as "classic" tasks) will still take effect if no new-style tasks are
found. Major thanks to Travis Swicegood for the original implementation.
    * #56: Namespacing is now possible: Fabric will crawl imported module
objects looking for new-style task objects and build a dotted hierarchy (tasks
named e.g. web.deploy or db.migrations.run), allowing for greater organization.
See Namespaces for details. Thanks again to Travis Swicegood.

(gls)