Allow c++ files for cscope

[tdupes]

Since cscope supports C++ files, could we update the call to fnmatch in do_cscope to recognize .cc, .cpp and .hpp files as well?

[ibara]

Sure. But I think you're better off emailing tech@openbsd with such a diff, and then I can pull it in to this portable version.

[tdupes]

thanks for the tip