Allow "-" to mean read filenames from stdin with -F/--files.
C++ comments with long first words were wrapped, leaving an empty comment line.
Merge pull request #157 from madscientist/ms/stdin

Allow "-" to mean read filenames from stdin with -F/--files.
Merge pull request #158 from madscientist/ms/wrap

C++ comments with long first words were wrapped, leaving an empty comment line.