Failing Octave unit test: director_default

[jaeandersson]

The following test works for MATLAB, but not Octave:

checking matlab testcase director_default
ERROR: director_defaultMEX: No matching function for overload function 'new_Foo'
.  Possible C/C++ prototypes are:
    Foo::Foo(mxArray *,int)
    Foo::Foo(mxArray *)\nERROR: director_defaultMEX: No matching function for ov
erload function 'new_Foo'.  Possible C/C++ prototypes are:
    Foo::Foo(mxArray *,int)
    Foo::Foo(mxArray *)\n
   director_default failed
checking matlab testcase director_detect