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

release/scripts/bpymodules/BPyWindow.py

@@ -1,6 +1,6 @@
 import Blender
 from Blender import Mathutils, Window, Scene, Draw, Mesh
-from Blender.Mathutils import CrossVecs, Matrix, Vector, Intersect, LineIntersect
+from Blender.Mathutils import CrossVecs, Matrix, Vector, Intersect
 
 # DESCRIPTION:
 # screen_x, screen_y the origin point of the pick ray