Add efltk 2.0.1,

EFltk is a LGPL'd C++ graphical user interface toolkit for X
(UNIX(r)), OpenGL(r), and Microsoft(r) Windows(r). It is based
on FLTK2 (see README.fltk) and is currently developed by
Equinox Desktop Environment Team (ede.sf.net)

PR: ports/63517
Submitted by: Sergey Matveychuk <sem@ciam.ru>