Workaround missing links

[sloriot]

No description provided.

[albert-github]

Note the problem looks like to be present in BGL/doc/BGL/BGL.txt as well.

[albert-github]

I was still a bit intrigued by the problem and it looks like doxygen gets a bit confused due to the, undocumented, definitions at the lines 37 and 122. The definition at line 188 is documented.
Would it be possible to either:

• move the function (plus its documentation) from line 188 before the functions on the lines 37 and 122
• put the functions from the lines 37 and 122 in a #ifndef DOXYGEN_RUNING ... #endif block
  (non related side note the DOXYGEN_RUNNING is defined in BaseDoxyfile.in but also in Kinetic_space_partition/Doxyfile.in and Kinetic_surface_reconstruction/Doxyfile.in I don't think the later 2 definitions shouldn't be there)

Analogous for the other function.

[sloriot]

Successfully tested in CGAL-6.0-Ic-294