Blender Git Loki

Expose the Pose Propagate tool a bit more in the UI

From the various forum threads and the fact that a new addon has cropped up,
it appears that it is not that well known that this tool exists, and that it
can be used solve a very common problem that animators face. Namely:
When you've gone through blocking out your key poses and then realise
that you need to adjust parts of the rig which don't change much, this
tool solves the problem of needing to go through doing grunt-work to
fix all the other keyframes which now need to change as well.

So, this tool is now available in the following two places (in addition to
the existing Pose -> Propagate menu):
* Toolbar - The "Propagate" button will use the default mode (or the last
used mode for each subsequent invocation).
The arrow-button beside this will allow choosing between the different
modes. (NOTE: The UI team may have different thoughts on this, but,
let's give this a try for a while first, to see if this sort of thing works)
* Alt-P - In Pose Mode, this will now bring up a menu allowing you to choose
which mode is used. Since this sort of thing is something that does
get run several times in a row when you need it, having this hotkey
will make it a bit more convenient.