Sort info output

[orzechow]

It would be very handy if the table printed by wstool info would be sorted by package name.
I work with >100 packages in my workspace, so sorting is a must for me...

Yes, I can use wstool info | sort instead, but that distroys the prefix and table header (no big issue though).

[tkruse]

At a glance, I guess this was not considered because the package order has important semantic meaning in with rosbuild in the ROS_PKG_PATH, and wstool and rosinstall/rosws share the same library code. Sorting in wstool exclusively could be useful, I guess.

[dirk-thomas]

Closing since the repository is about to be archived: see #154.