Subtracts off margin for raycasts onto box/mesh.

Thanks Andres! Depth sensors in drake should now be a lot more
accurate.
Taking away margins entirely
Merge branch 'master' of https://github.com/RobotLocomotion/drake into lidar_fix_pure
avoid singular rpys in geom conversion test
change testIK tolerance on gaze constraint. delete testIKGaze
more robust double pend visualizer
Merge pull request #489 from hongkai-dai/fix-testIK

change testIK tolerance on gaze constraint. delete testIKGaze
Merge pull request #484 from RussTedrake/fix_geom_test

avoid singular rpys in geom conversion test
minor tweaks from lecture 11
Merge branch 'master' of https://github.com/RobotLocomotion/drake
add note to recommend disabling startup warning
Curly braces

Minor edit: more portable syntax for aggregate initialization. Omitting curly braces prevents compiling on (some/many?) Mac OSX systems with standard xcode tools and recommended prerequisites. 'error: cannot omit braces around initialization of subobject when using direct list-initialization'. I believe omitting the braces is possible (not mandatory) in C++14 but not possible in standard C++11 or earlier.
More curly braces

Minor edit: more portable syntax for aggregate initialization. Omitting curly braces prevents compiling on (some/many?) Mac OSX systems with standard xcode tools and recommended prerequisites. 'error: cannot omit braces around initialization of subobject when using direct list-initialization'. I believe omitting the braces is possible (not mandatory) in C++14 but not possible in standard C++11 or earlier.
Merge pull request #491 from rbeverly/patch-1

Curly braces
Merge pull request #492 from rbeverly/patch-2

More curly braces
Ability for rigid mody manip to toggle margins in collision detects

Rigid Mody Manipulator now maintains two bullet collision models, one with margins on
meshes and boxes, and one without. Boolean flags on collision-relevant methods
(which currently default to true, i.e. with margins like previously) allow control
on per-call basis.
Merge branch 'master' of https://github.com/RobotLocomotion/drake into lidar_fix_pure
Fixing function ambiguity that is causing model_test ot fail.

As far as I can tell, given the new AddElement variants with an extra optional
bool arg, the compiler was deciding that casting the (also optional, through
multiple function declarations) group_name string could be cast to a bool
to make the call work... resolved by changing the version of the call without
the groupname supplied to have its own special name. (Hopefully this doesn't
affect anyone outside of model_test?
support zero inputs in direct trajectory optimization. add limit cycle examples for rimless wheel (works well), and van der pol (doesn't work yet)
got van der pol example working