Added python func Blender.Geometry.LineIntersect2D(v1,v2,v3,v4)

updated archimap and cookie cutter to use it, removed python version from BPyMathutils
archimap island merging is noticibly faster

source/blender/python/api2_2x/Geometry.h

@@ -38,6 +38,7 @@
 #include "vector.h"
 
 PyObject *Geometry_Init( void );
-PyObject *M_Geometry_PolyFill( PyObject * self, PyObject * args );
+static PyObject *M_Geometry_PolyFill( PyObject * self, PyObject * args );
+static PyObject *M_Geometry_LineIntersect2D( PyObject * self, PyObject * args );
 
 #endif				/* EXPP_Geometry_H */