Include base motion in visualizer (ros-pkg ticket #340)

[hershwg]

Use libTF to place base in its actual position in visualizer

trac data:

• Owner: jfaust
• Reporter: sachinc
• Reported at: Mon Sep 22 15:59:04 2008
• URL: http://code.ros.org/trac/ros-pkg/ticket/340

[hershwg]

[jfaust] I added an option to set the coordinate frame... on the left, under the "Visualizer Options" tab. Once the new version of libTF is in place the dropdown will actually be populated with the frames libTF knows about.