Following the discussion on answer.ros.org I've added the possibility to create a chain of mimic joints; before, each dependent joint was only able to mime the motion of free joints.

* Style cleanup within collada_urdf.

No functional change, just style.

Signed-off-by: Chris Lalancette <clalancette@osrfoundation.org>

* Make sure to quit out of urdf_to_collada when invalid file is found.

Otherwise, we'll just end up segfaulting later on.

Signed-off-by: Chris Lalancette <clalancette@osrfoundation.org>

* Re-enable one of the collada-urdf tests.

In point of fact, we delete the rest of the tests because
they don't make much sense anymore.  Just enable this one
for now; we'll enable further ones in the future.

Signed-off-by: Chris Lalancette <clalancette@osrfoundation.org>

* Add in another test for collada_urdf.

Signed-off-by: Chris Lalancette <clalancette@osrfoundation.org>

collada_parser,kdl_parser,urdf: add c++11 flag,
collada_parser: replace typeof with ansi __typeof__
builded/tested on gentoo

Thanks den4ix for the contribution!

* Allow supplying NodeHandle for initParam using new function.

* fixed missing return statement in previous commit.

Based on an initial patch from YoheiKakiuchi, just totally
remove old Gazebo 1.0 settings, as they are never used and
almost certainly will never be used.

Signed-off-by: Chris Lalancette <clalancette@osrfoundation.org>

…to alextoind_pr_177