Koch Star Eigenvalues

Gets the coordinates of kocks snowflake and creates the poygone in femlab3.0.

kochstar.m gets first the coordinates of kocks kurve by the function koch_xy.m that uses the function koch.m (Copyright (c) 2000 by Salman Durrani ([e-mail])). A snowflake poygone (x,y) is then defining the geometry in femlab3.0 that solve the eigenvalue problem and visualizing the solutions