Tests can't find OpenRAVE headers

[mkoval]

I got this error in pr-cleanroom:

/src/comps/cbirrt2/test/test_params.cpp:7:31: fatal error: openrave/openrave.h: No such file or directory
 #include <openrave/openrave.h>
                               ^
compilation terminated.
/src/comps/cbirrt2/test/test_wam7_unconstrained.cpp:7:31: fatal error: openrave/openrave.h: No such file or directory
 #include <openrave/openrave.h>
                               ^
compilation terminated.
/src/comps/cbirrt2/test/test_wam7_constrained.cpp:7:31: fatal error: openrave/openrave.h: No such file or directory
 #include <openrave/openrave.h>
                               ^
compilation terminated.

[mkoval]

@cdellin Could you take a look at this?

[cdellin]

Will do! I'm sure it's just that catkin.cmake doesn't have the necessary include_directories() line, because openrave_catkin silently includes it itself for some reason (-:

[cdellin]

See #4.