I've been busy with school and also with preparing for the upcoming

I've been busy with school and also with preparing for the upcoming
release, so I haven't been spending a lot of time on
GraphicsPath. Rather than letting my changes go stale, I'll commit
them now while they are still in a compilable state.

* GraphicsPath.cs: Implemented. Still needs testing, though.
Particular the PathPoints property, I ran into a P/Invoke problem,
I need to first fix that before I can go on with the rest of the testing.

* gdipFunctions.cs: Import functions for GraphicsPath.

* graphics-path.c (GdipGetPathPoints): Fixed.
(GdipCreatePath): Remember to	initialize the arrays instead of
just setting them to NULL.
(GdipGetPathTypes, GdipGetPathPoints): Fix signature.

* Makefile (local_sources): Add graphics-path.c to the build.

* Matrix.cs (Matrix): Removed reference to GpRect/GpRectF.

* Bitmap.cs (LockBits):
* Graphics.cs (DrawString): Removed reference to GpRectF.

* gdipStructs.cs (GpRectF, GpRect, GpPointF, GpPoint):
Removed. Didn't know that structs are laid out sequentially by
default. We don't need these anymore.

svn path=/trunk/mcs/; revision=22282