gdiplus: Implement GdipAddPathArcI.

dlls/gdiplus/gdiplus.spec

 @ stdcall GdipAddPathArc(ptr long long long long long long)
-@ stub GdipAddPathArcI
+@ stdcall GdipAddPathArcI(ptr long long long long long long)
 @ stub GdipAddPathBezier
 @ stdcall GdipAddPathBezierI(ptr long long long long long long long long)
 @ stdcall GdipAddPathBeziers(ptr ptr long)

dlls/gdiplus/graphicspath.c

@@ -97,6 +97,12 @@ GpStatus WINGDIPAPI GdipAddPathArc(GpPath *path, REAL x1, REAL y1, REAL x2,
     return Ok;
 }
 
+GpStatus WINGDIPAPI GdipAddPathArcI(GpPath *path, INT x1, INT y1, INT x2,
+   INT y2, REAL startAngle, REAL sweepAngle)
+{
+    return GdipAddPathArc(path,(REAL)x1,(REAL)y1,(REAL)x2,(REAL)y2,startAngle,sweepAngle);
+}
+
 GpStatus WINGDIPAPI GdipAddPathBezierI(GpPath *path, INT x1, INT y1, INT x2,
     INT y2, INT x3, INT y3, INT x4, INT y4)
 {

include/gdiplusflat.h

@@ -182,6 +182,7 @@ GpStatus WINGDIPAPI GdipSetSolidFillColor(GpSolidFill*,ARGB);
 GpStatus WINGDIPAPI GdipSetTextureTransform(GpTexture *,GDIPCONST GpMatrix*);
 
 GpStatus WINGDIPAPI GdipAddPathArc(GpPath*,REAL,REAL,REAL,REAL,REAL,REAL);
+GpStatus WINGDIPAPI GdipAddPathArcI(GpPath*,INT,INT,INT,INT,REAL,REAL);
 GpStatus WINGDIPAPI GdipAddPathBezierI(GpPath*,INT,INT,INT,INT,INT,INT,INT,INT);
 GpStatus WINGDIPAPI GdipAddPathBeziers(GpPath*,GDIPCONST GpPointF*,INT);
 GpStatus WINGDIPAPI GdipAddPathEllipse(GpPath*,REAL,REAL,REAL,REAL);