misc/170128: libexttextcat-3.3.1 update problem

[J B]

This problem is solved.
$ # which createfp
/usr/local/bin/createfp

There is no libexttextcat in ports any more, only libtextcat.
But there is still reference to libexttextcat there:
/usr/local/share/doc/libexttextcat/README.libtextcat